What is Adsense Formula?

If you're just geatting started, there's a simple formula for you to understand how to earn money with google adsense:

Revenue = Traffic * CTR * CPC

You probably understand what traffic means.

So CTR is Click Through rate, and it means how many of your visitors are clicking ads. It actually depends on how your site is adsense-optimized.

CPC is Cost Per Click. Different words have different costs. Some can be about $0,01, some are over $10.




google-site-verification: googlef3d06b78dd0e3b5e.html

How to Increase Your Adsense CTR x20 in 3 Minutes

I have a couple of blogs and experimenting with google adsense. I'm in for only a couple of months, so i actually thought the main thing i need is great traffic.

Things changed when one of my posts (not from this blog) went to reddit top 5. it then appeared at fark and delicious tops also. i had something like 60000 visitors in two days, and earned... well, a dollar or so.

that's the moment i started thiniking about optimizing my pages for adsense.

I already had ads with no borders, and colors were matching my template. i searched web for some answers, and did a couple of things. after that, my CTR increased about 20 times. unfortunately, at that moment traffic was quite low, but i still have some everyday income that is about 20 times higher. here are the simple steps:

1. Instead of 468x15 Link Unit i put 300x250 Rectangle at the top of my page under it's header.
2. I made links blue. Yes, people simply expect free links to be blue.
3. I made ads urls color match text color.

As simple as that! If i did that before, i could get about 150$ in 2 days. So make the changes right now!. If you experience your CTR increase after doing this (belive me, you will!), let me know. Perhaps, next success story will be about you!

Purchasing new Adsense ready site ? Read on..

Purchasing new Adsense ready site ? Read on..

Purchasing an Adsense ready website is a good idea, especially if you don't know much about web development, but there are a few things to take care of. There are basically two types of Adsense ready websites – the duplicate content websites which get sold over and over and custom-made, original Adsense ready websites. Let's have a look at both of them:

“Recycled” Google Adsense ready website – let's call them recycled because they get used over and over and over… You can purchase 10, 50 or 150 websites, each with hundreds of pages, for less than $100! Of course, these websites get sold, in their exact same form, to hundreds or thousands of other people. However, what you lose in search engine rankings you make up in structure and content quality. And with a few dozen Google Adsense ready websites like these, you only need to handle some high quality link exchanges, or get visitors on your sites through the other program offered by Google to advertisers – Adwords.

Unique content Adsense ready websites are the other option. You will most likely pay a few hundred dollars for a unique website with 15-25 pages of original content. Instead of a hundred duplicate content websites you will have just one original website. It's hard to say which option will allow you to earn more from your online business, but it's clear that your unique content website will outrank duplicate content in the search engines. An original Adsense ready website offers a more stable income level, and you can grow it into a top ranking site in time. Your online earning will depend on numerous factors, but one thing is for sure – the search engines will love your site for bringing new content to the Internet and will reward you by ranking it higher. Here are some tips on generating fresh content for your website: 1. How to get good Adsense content?

You can either write your own content or pay someone else to write it. If your Adsense content is on a topic you like, try to write it yourself. If you have a website on rocket engineering and you are a philosophy major, maybe you'll want to get a copywriter or ghostwriter to do the writing, for a fee.

2. How long should the Adsense content be for one web page? There are no limits as far as length is concerned. Create an article or content that covers the chosen topic. Most web masters using Google Adsense prefer to have a minimum of 250 words for each new page. Others claim that Google favors web pages with over 1,000 words of unique content. The general rule, however, is that if the visitors like your Google Adsense content, so do the search engines.

3. What keyword density should I use to rank high on Google? Again, there are no strict rules. Successful publishers use the main web page keyword at least four or five times. The web page title should also include the keyword. High quality Google Adsense content doesn't look like a string of keywords – it manages to blend in the keyword nicely, so that human visitors read a relevant and well planned text.

4. How many pages should my Adsense ready website have? The more unique content you have, the better your site will rank. Unique Google Adsense content, however, is hard to obtain at “industrial levels”.

5. How much does it cost to get original content for my Adsense website? A good copywriter might charge $15 for a 400-word article. You can also use different outsourcing companies and freelancing sites to look for cheaper alternatives. Outsourcing your writing job might save you 50% of the costs. However, make sure the quality of the Adsense content you purchase is high.

Live Roulette

Live Roulette

If you are new at playing roulette, have a look at Play Live Roulette guides that are found on live dealer casino's Website . Roulette is a combination of luck and excitement, two of the highly thrilling aspects of a casino game, and the live roulette version is nothing less. Most of all, the stakes are just as high, so winning a roulette game is definitely a challenge. One that involves trying to outsmart luck, or maybe not. But losing large amounts of money in a roulette game can also be done effortlessly. If you are not careful, a game of roulette can drive you out of your house and home. Thus, before you decide to play a game of roulette, make sure that you know the rules and the basics first. It may sound easy to you, though. The idea of roulette is to place bets, and see if the ball lands on the slot that represents the values that you bet on. However, it is easy to see that it’s more than just that.

Another tip to make sure that your fantastic roulette experience doesn’t end sour is to make sure to stick within your budget. Set an amount that you intend to spend, and only spend as much. Once you’ve used up your budget, walk away. Also, if you ever get any winnings, if you want to win some, don’t mix it in with the money you set aside for playing.

Some of online casino websites offer Live Dealer Roulette which is very fun and different than the typical online casino roulette versions of the game found online.

I have Top paying keywords but How to apply them ?

I have Top paying keywords but How to apply them ?

Applying top paying keywords in your website is quite similar to Search Engine Optimization. However, there are many differences as well. I have done in-depth research on the subject. On the basis of that research, I have marked the points you need to keep in mind while optimizing your website for maximum payouts through highest paying Adsense keywords. We will discuss how to apply top paying keywords as well as traffic pulling keywords to a webpage for maximum payouts and traffic.

First of all, we must understand that Google Adsense bot (formally known as Google Mediabot) is a subset of Google's main crawler. The crawler detects the theme of the pages and makes an entry in the Google's index (a private index - not shown publicly) that records the theme of all the pages hosting Adsense script. In other words, Google Mediabot has the characteristics somewhat similar to Google's main crawler.

There are two types of optimizations that you need to follow to make a web page search engine optimized. Same is the case with Adsense Optimization.

Internal Optimization : Internal Optimization includes Meta tags, Title Text, Optimization of content, and internal linking of your website. Here we will learn how to increase relevancy of ads and how to inject keywords that will help you get high paying ads. Internal Optimization has a high impact on the relevancy of ads and CTR.

External Optimization : This includes the web pages that are giving links to you (external profile of your website), anchor text being used to link your website, and many more variables that search engines use to evaluate the authoritative importance of a web page. External Optimization helps bring relevant traffic to your website and enables you to earn more by getting more CTR (Click Thru Ratio).

HOW LONG DOES YOUR WEBPAGE TAKE TO SHOW HIGH PAYING ADS?

This is an important question that needs to be answered. As soon as you apply Adsense script in a webpage, it is visited by the Google Mediabot (within 2 hours to 48 hours, if the bot is free - immediately). Google Mediabot's responsibility is to evaluate the theme of the web page, and enable ads almost immediately so that your website traffic does not see FREE SERVICE ADS.

The relevancy of ads increases as Google's main crawler visits your website and updates its index. Furthermore, you may observe an increase in the earnings as the PR of your website/web page increases. This means that in case of Google Adsense, the internal factors that affect the ads of a particular page are evaluated by Google Mediabot (but Google's main crawler can overwrite them). And on the other hand, the external factors are inspected by the Google Crawler over a period of time. Having said that, there are simply many many factors (including those which you cannot control) that affect your ads. We are going to discuss the factors that you can control. Lets take control!

REMEMBER:

1. Relevancy of ads may increase as your page is indexed by Google.
2. EPC (Earnings Per lick) may increase as your PR increases.
3. It entirely depends upon you how well you promote your website and get maximum earnings from your website/web pages.
4. In case of Google, many variables are involved.

Top 10 AdSense Tricks

Top 10 AdSense Tricks

Google AdSense - http://www.google.com/adsense - is fast becoming the preferred way for people to earn an income online. Forget eBay and multiple affïliate programs. Whether you are a work-at-home mom trying to make a little extra cäsh or an Internet entrepreneur with hundreds of monetized websites, AdSense is truly the easiest way to earn money.
The self-proclaimed AdSense gurus and experts are sharing this insider knowledge, for a fee.
Editorial Note: Some of the website AdSense examples provided below by the author may have changed since the article was written.
You can learn all these secrets from them, as long as you buy their e-book, sign up for their seminar or purchase their newsletter. But I'm going to share all their AdSense tricks for frëe. Here they are:
1) Color code your ads to match your web site palette *exactly*. Don't use frames around your ads. Instead, in the AdSense code generation interface, make sure you choose the same color as your page background for the ad frame and the ad background.
When choosing the ad heading colors, match them to the *exact* color of your page headings. Use the exact same ad background shade as your page background. Use the exact same ad text font and color as the text on your pages. You can see an example of this color-matching on my Search Engine Advice Blog - notice the 4 link ad unit at the top and the skyscraper text ad unit on the left hand side under the heading Ads by Google as you scroll down the page? The link and text colors are identical to the color palette used throughout the rest of the page.
Near enough is NOT good enough. If you can't quite get the color matching right, use Google's built in color palette together with the RGB to HEX or vice versa color converter on this page - http://www.w3.org/MarkUp/Guide/Style. That handy little tool was a life saver for me.
This is probably the one single tweak that made the most difference to my commission levels.
2) Try not to use the traditional horizontal banner style or leaderboard image ads because people are blind to them.
3) Use Google's own AdSense optimization tips and visual heat map to assist you in deciding where on your page to place your AdSense ad code.
4) Research competitive keywords using a keyword research tool such as Keyword Discovery or grab a list of the most popular keywords from various sources and use them in your web site pages where relevant. This article - http://searchenginewatch.com/facts/article.php/2156041 - is a good source of frequently searched keywords. Targeting popular keywords should trigger AdSense ads on your pages that utilize those keywords. The more popular the keyword or phrase, the higher AdWords advertisers are generally willing to pay-per-click for it so the higher your commission on those clicks.
5) Incorporate the AdSense code into your page so that the ads look like a regular part of your site. You can see an example on this Internet Dating Stories site - http://www.lovestory.com.au - where link ads are incorporated within the regular left hand navigation of the site under the heading "Sponsor Links". 6)Use Google's new 4 and 5 link ad units wherever possible. They seem to have a much higher Click-Through-Rate (CTR) than regular ad styles. You can view all the AdSense ad formats at https://www.google.com/adsense/adformats.
7) Place arrows or images next to your ads to draw attention to them. You can see two different versions on this search engine article library page - http://www.searchenginecollege.com/articles/article-library.htm - at the top (where a pointing hand directs your eye to the ad) and the bottom where 3 images draw your attention to each of the three AdSense ads.
8) Use the full allowance of multiple AdSense ads on each of your pages - 3 regular AdSense ads, plus 1 link unit. Use careful placement of these ads so they blend into your site and don't distract from your content. Clever use of this allowance can be seen on this page about bad Internet dating stories - http://www.lovestory.com.au/bad-stories.htm - where you see:

• 1 horizontal 4 link ad unit towards the top of the page under the first paragraph.
• 1 vertical skyscraper text ad unit about halfway down the left hand side under "Sponsor Links".
• 1 vertical skyscraper image ad unit down the left hand side under "Sponsor Links".
• 1 horizontal text banner unit at the bottom of the page with images above each ad to draw attention to them.

You can also include 1 AdSense referral button in addition to the 3 other units.
9) Tailor your page content to a particular niche or focus. Page content that is tailored towards a specific theme is more likely to trigger AdWords ads that closely match the content and are therefore more likely to interest your visitors and inspire them to clíck.
Don't create pages merely for the sake of placing AdSense ads. Visitors (and search engines) can see through this ruse in an instänt.
10) Use custom Ad Channels for each of your ad placements, for example, "Top 5 Link Unit Blue Palette" or "Left Side Navigation Image Skyscraper" etc. Tweak, track and measure the success of each of these custom channels so you know what gives you the highest CTR. Some ad formats and colors will work better than others, but you won't know which until you test, test and test some more!

List of Top Search Engines & What Is Google Adsense

List of Top Search Engines

	AltaVista is consistently one of the largest search engines on the web, in terms of pages indexed. Its comprehensive coverage and wide range of power searching commands makes it a particular favorite among researchers.AltaVista opened in December 1995. It was owned by Digital, then run by Compaq (which purchased Digital in 1998), then spun off into a separate company which is now controlled by CMGI Receives search results from dmoz directory and overture search engine.
	Ask Jeeves is a human-powered search service that aims to direct you to the exact page that answers your question. If it fails to find a match within its own database, then it will provide matching web pages from various search engines.Receives search results from google and teoma search engines.
	The main listings for categories and web sites come from the Open Directory. Before the launch of AOL Search in October 1999, the AOL search service was Excite-powered AOL NetFind. Recieves search results from google search engine and dmoz directory.
	Excite is one of the popular search services on the web. It offers a medium-sized index and integrates non-web material such as company information and sports scores into its results, when appropriate. Excite was launched in late 1995. It grew quickly in prominence and consumed two of its competitors, Magellan in July 1996, and WebCrawler in November 1996. These continue to run as separate services.
	Formerly called All The Web, FAST Search aims to index the entire web. It was the first search engine to break the 200 million web page index milestone and consistently has one of the largest indexes of the web. FAST Search launched in May 1999. Supplies search results for alltheweb search engine and lycos search enigne.
	INFOSEEK.COM Go is a portal site produced by Infoseek and Disney. It offers portal features such as personalization and free e-mail, plus the search capabilities of the former Infoseek search service, which has now been folded into Go. Searchers will find that Go consistently provides quality results in response to many general and broad searches, thanks to its ESP search algorithm. It also has an impressive human-compiled directory of web sites. Go officially launched in January 1999. It is not related to GoTo, below. The former Infoseek service launched in early 1995.
	Google is a now the largest search engine in the web, They are the leading provider of results and a recent stats they serve 85% search results, They make heavy use of link popularity as a primary way to rank web sites. Google also has a huge index of the web and provides some results to Yahoo and Netscape Search. Supplies search results for lycos, hotbot, aol, askjeeves, teoma, netscape, iwon and yahoo search engines. Itreceives search results from dmoz directory.
	HotBot is a favorite among researchers due to its many power searching features. In most cases, HotBot's first page of results comes from the Inktomi search engine, which is also used by other services. It gets its directory information from the Open Directory project (see below). HotBot launched in May 1996 as Wired Digital's entry into the search engine market. Lycos purchased Wired Digital in October 1998 and continues to run HotBot as a separate search service. Receives search results from inktomi search engine, google search engine and from dmoz directory.
	Backed by US television network CBS, iWon has a directory of web sites generated automatically by Inktomi, which also provides its more traditional crawler-based results. iWon gives away daily, weekly and monthly prizes in a marketing model unique among the major services. It launched in Fall 1999.Receives search from google search engine and from dmoz directory.
	LookSmart is a human-compiled directory of web sites. In addition to being a stand-alone service, LookSmart provides directory results to MSN Search, Excite and many other partners. Inktomi provides LookSmart with search results when a search fails to find a match from among LookSmart's reviews. LookSmart launched independently in October 1996, was backed by Reader's Digest for about a year, and then company executives bought back control of the service. Receives search results from inktomi search engine and supplies search results to msn search engine.
	Lycos started out as a search engine, depending on listings that came from spidering the web. In April 1999, it shifted to a directory model similar to Yahoo. Its main listings come from the Open Directory project, and then secondary results come from spidering the web. Lycos also feature another directory of web sites called Lycos Community Guides. Sites are automatically listed in these guides using technology from WiseWire, a company Lycos acquired in early 1998. Lycos is one of the oldest search services, around since May 1994. It began as a project at Carnegie Mellon University. The name Lycos comes from the Latin for "wolf spider." In October 1998, Lycos acquired thecompeting HotBot search service, which continues to be run separately. Receives search results from fast, google search engines and from dmoz directory.
	Microsoft's MSN Search service is a LookSmart-powered directory of web sites, with secondary results that come from AltaVista. RealNames and Direct Hit data is also made available. MSN Search also offers a unique way for Internet Explorer 5 users to save past searches. Receives search results from inktomi, overture and looksmart search engines.
	Netscape Search's results come primarily from the Open Directory and Netscape's own "Smart Browsing" database, which does an excellent job of listing "official" web sites. Secondary results come from Google. At the Netscape Netcenter portal site, other search engines are also featured. Receives search results from google search engine and from dmoz directory.
	The Open Directory uses volunteer editors to catalog the web. Formerly known as NewHoo, it was launched in June 1998. It was acquired by Netscape in November 1998, and the company pledged that anyone would be able to use information from the directory through an open license arrangement. Netscape itself was the first licensee. Lycos and AOL Search also make heavy use of Open Directory data, while AltaVista and HotBot prominently feature Open Directory categories within their results pages.Supplies search results to lycos, hotbot, aol, google, teoma, netscape, iwon, altavista search engines.
	WebCrawler has the smallest index of any major search engine on the web -- think of it as Excite Lite. The small index means WebCrawler is not the place to go when seeking obscure or unusual material. However, some people may feel that by having indexed fewer pages, WebCrawler provides less overwhelming results in response to general searches. WebCrawler opened to the public on April 20, 1994. It was started as a research project at the University of Washington. America Online purchased it in March 1995 and was the online service's preferred search engine until Nov. 1996. That was when Excite, a WebCrawler competitor, acquired the service. Excite continues to run WebCrawler as an independent search engine.
	Yahoo is the web's most popular search service and has a well-deserved reputation for helping people find information easily. The secret to Yahoo's success is human beings. It is the largest human-compiled guide to the web, employing about 150 editors in an effort to categorize the web. Yahoo has over 1 million sites listed. Yahoo also supplements its results with those from Google (Google took over from Inktomi in july 2000). If a search fails to find a match within Yahoo's own listings, then matches from Google are displayed. Google matches also appear after all Yahoo matches have first been shown. Yahoo is the oldest major web site directory, having launched in late 1994. Receives search results from google and overture search engines.

AdSense Formula for Making Money

The only AdSense formula that you need to know is this:

Earnings = number of clicks * average price per click

This is what I call the Fundamental AdSense Formula because you can derive almost every AdSense "secret" directly or indirectly from this formula. Do you want to earn more with AdSense? You have two ways of doing it:

1. Increase the number of clicks, and/or

2. Increase the average price per click

Your earnings will only go up if you do one or the other, and ideally both. It's an obvious formula, yes, but it's amazing how many people lose sight of it in their quest for increased AdSense earnings.

Increasing the Number of AdSense Clicks

Increasing the number of times the ads on your site or blog are clicked is the most obvious strategy. There are two general strategies you can follow:

1. Increase the traffic to the site, and/or

2. Adjust the ads to make them more "clickable"

Getting traffic is hard and takes time, so don't look at it as a quick fix. The best way to get traffic is to provide useful, unique content and to rank highly in search engine rankings for keywords related to that content. In other words, use standard search engine optimization techniques. DO NOT "buy" traffic or use "link farms" or other dubious techniques. Other tips for getting traffic:

1. Publish articles, even free ones, with links back to your site.

2. Include a link to your site in the signature at the bottom of your emails or in any forum
postings you make (if the forum allows it).

3. Participate in forums/groups related to the content of your site or blog. The key is to
participate, not lurk, and don't just post messages promoting your site.

4. Add comments (relevant ones only, please) to other blogs, you can usually link back to yours.
(This won't help your search engine rankings, but it may allow others who are reading those
comments to find your own site.)

5. Syndicate your content (trivial if you have a blog) and make sure that the content is
registered with syndication aggregators.

6. List your site in relevant directories.

Adjusting the ads is something you can do almost immediately:

1. Position the ads on the page in order to make them more noticeable. Google even publishes a helpful heat map (see https://www.google.com/support/adsense/bin/static.py?page=tips.html ) for AdSense publishers.

2. Choose the best AdSense ad format that works for your site.

3. Change the ad colors either to make the ads blend in with your site or to make them stand out. Again, it varies depending on the site.

Whatever you do, DO NOT ENTICE VISITORS TO CLICK THE ADS. Google is very strict about this, see the AdSense program policies (found at https://www.google.com/adsense/policies ) for the details.

Increasing the Average AdSense Price Per Click

Increasing the average price per click you receive from AdSense is the other strategy for increasing your overall AdSense earnings. You can do this by:

1. Carefully targeting your content, and/or

2. Filtering out and avoiding low-paying ads

Content targeting isn't just about creating relevant, unique content. It's also making sure that that content is written to target the higher-paying keywords associated with a given topic. This means:

1. Figuring out which keyword variations for that topic pay more. Often the more specialized variations and phrases pay more than the "generic" terms.

2. Ensuring that the keyword density of the content favors the higher-paying keyword variations. See http://www.MakeEasyMoneyWithGoogle.com/vioxx-lawsuit.html for an example of well-targeted ads due to appropriate keyword density.

And to reduce the occurrence of lower-paying ads, consider these two strategies:

1. Use AdSense's competitive filter mechanism to screen out the ads that you don't want

2. Show fewer ads on a page. The fewer ads you show, the more the higher-paying ads get displayed and clicked.

Many publishers also report that their earnings increase if they remove ads completely from pages with few or no clicks. Again, the "less is more" strategy favors the higher-paying ads.

There's No Magic

As you can see, there's no magic involved to increasing your AdSense earnings. The Fundamental AdSense Formula is easy to understand, but that doesn't mean it's easy to apply the formula. It takes time and effort to do it, just like most things.

Do you know what Google Adsense is ?
Sometimes we cannot take things for granted, for example, one of my friends for several years spoke to me and I just realised that all this time, he though Adwords was Adsense. Shocking! Well shocking to me anyway.
That’s why I would like to create a section here. A beginner’s guide to Google Adsense. Everything a beginner need to know on Google Adsense.

When you are searching with Google you will see some results on the right hand side of the search results. These are called Google Adwords. They’re advertisements which people pay for. Everytime you click on the adwords, the advertiser is charged a certain amount. This is because the adverts are paid for on a as click basis. For example, if 3 people clicked on your advert 3 times, then you will be charged 3 times. This is what is called “Pay per click” or PPC.

Google Adwords are used for marketers who cannot get high on the search engines naturally. Therefore why bother fiddling about with the website where you can pay for the rankings. Of course, the more you pay per click, the higher your ad will appear up the search engine page

On top of the Beginner’s Guide To Google Adsense, maybe I should write one for Adwords as well

Adsense are ads which look similar to Adwords but they can be customised with several options such as the background colour, border colour, colour of the fonts, colour of the hyper link and also the size of the box.

Adsense can be put on a website and it will display the appropriate Adwords which is related to the content. This works very much like the Google search page results. Therefore one of the most important message for the Beginner’s Guide To Google Adsense is build a website which contains valuable information. Adsense will pick up on the keywords of the content and will display the appropriate ads.

More Words From Wikipedia ,
the free encyclopedia

AdSense is an ad serving program run by Google. Website owners can enroll in this program to enable text, image and, more recently, video advertisements on their sites. These ads are administered by Google and generate revenue on either a per-click or per-thousand-impressions basis. Google is also currently beta-testing a cost-per-action based service.
Google utilizes its search technology to serve ads based on website content, the user's geographical location, and other factors. Those wanting to advertise with Google's targeted ad system may sign up through AdWords. AdSense has become a popular method of placing advertising on a website because the ads are less intrusive than most banners, and the content of the ads is often relevant to the website.
Currently, the AdSense uses JavaScript code to incorporate the advertisements into a participating site. If it is included on a site which has not yet been crawled by the Mediabot, it will temporarily display advertisements for charitable causes known as public service announcements (PSAs). (Note that the Mediabot is a separate crawler from the Googlebot that maintains Google's search index.)
Many sites use AdSense to monetize their content and some webmasters work hard to maximize their own AdSense income. They do this in three ways:

1. They use a wide range of traffic generating techniques including but not limited to online advertising.
2. They build valuable content on their sites which attracts AdSense ads which pay out the most when they get clicked.
3. They use copy on their websites that encourage clicks on ads. Note that Google prohibits people from using phrases like "Click on my AdSense ads" to increase click rates. Phrases accepted are "Sponsored Links" and "Advertisements".

The source of all AdSense income is the AdWords program which in turn has a complex pricing model based on a Vickrey second price auction, in that it commands an advertiser to submit a sealed bid (not observable by competitors). Additionally, for any given click received, advertisers only pay one bid increment above the second-highest bid.

HISTORY

The underlying technology behind AdSense was derived originally from WordNet and Simpli, a company started by the founder of Wordnet — George A. Miller — and a number of professors and graduate students from Brown University, including James A. Anderson, Jeff Stibel and Steve Reiss. A variation of this technology utilizing Wordnet was developed by Oingo, a small search engine company based in Santa Monica founded in 1998^] Oingo focused on semantic searches rather than brute force string searches.^[3] Oingo changed its name to Applied Semantics, which was then bought by Google for $102 million in April 2003, to replace a similar system being developed in house.

ADSENSE FOR FEEDS

In May 2005, Google unveiled AdSense for feeds, a version of AdSense that runs on RSS and Atom feeds that have more than 100 active subscribers. According to the Official Google Blog, "advertisers have their ads placed in the most appropriate feed articles; publishers are paid for their original content; readers see relevant advertising — and in the long run, more quality feeds to choose from".
AdSense for feeds works by inserting images into a feed. When the image is displayed by the reader/browser, Google writes the ad content into the image that it returns. The ad content is chosen based on the content of the feed surrounding the image. When the user clicks the image, he or she is redirected to the advertiser's site in the same way as regular AdSense ads.

ADSENSE FOR SEARCH

A companion to the regular AdSense program, AdSense for search lets website owners place Google search boxes on their pages. When a user searches the web or the site with the search box, Google shares any ad revenue it makes from those searches with the site owner. However, only if the ads on the page are clicked, the publisher is paid. Adsense does not pay publishers for mere searches.

HOW ADSENSE WORKS

Each time a visitor visits a page with an AdSense tag, a piece of JavaScript writes an iframe tag, whose src attribute includes the URL of the page. Google's servers use a cache of the page for the URL or the keywords in the URL itself to determine a set of high-value keywords. (Some of the details are described in the AdSense patent.) If keywords have been cached already, ads are served for those keywords based on the AdWords bidding system.

ABUSE

Some webmasters create sites tailored to lure searchers from Google and other engines onto their AdSense site to make money from clicks. These "zombie" sites often contain nothing but a large amount of interconnected, automated content (e.g.: A directory with content from the Open Directory Project, or scraper sites relying on RSS feeds for content). Possibly the most popular form of such "AdSense farms" are splogs ("spam blogs"), which are centered around known high-paying keywords. Many of these sites use content from other web sites, such as Wikipedia, to attract visitors. These and related approaches are considered to be search engine spam and can be reported to Google.
There have also been reports of Trojans engineered to produce fake Google ads that are formatted to look like legitimate ones. The Trojan Horse apparently downloads itself onto an unsuspecting computer through a web page and then replaces the original ads with its own set of malicious ads.

CRITICISM

Due to concerns about click fraud, Google AdSense has been criticized by some Search engine optimization firms as a large source of what Google calls "invalid clicks" in which one company clicks on a rival's search engine ads to drive up its costs. Some publishers have been blocked by Google, complaining that little justification or transparency was provided.
To help prevent click fraud, publishers can choose from a number of click tracking programs. These programs will display detailed information about the visitors who click on the AdSense advertisements. Publishers can use that data to determine if they've been a victim of click fraud or not. There are a number of such commercial scripts available for purchase. An open source alternative is AdLogger.
Google has also come under fire for allowing AdWords advertisers to abuse trademarks. In 2004, Google started allowing advertisers to bid on any search terms, including the trademarks of their competitors.
The payment terms for AdSense customers have also been criticized. Google withholds payment until an account reaches US$100 , but many small content providers require a long time - years in many cases - to build up this much AdSense revenue. These pending payments are recorded on Google's balance sheet as "accrued revenue share". At the close of its 2006 fiscal year, the sum of all these small debts amounted to a little over US $370 million - cash that Google is able to invest but which effectively belongs to its customers.