Google AdSense

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.

It currently 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:

They use a wide range of traffic generating techniques including but not limited to online advertising.

They build valuable content on their sites; content which attracts AdSense ads and which pay out the most when they get clicked.
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.

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.

Step by Step Adsense Guide

Google AdSense is the program that can give you advertising revenue from each page on your website—with a minimal investment in time and no additional resources.

AdSense delivers relevant text and image ads that are precisely targeted to your site and your site content. And when you add a Google search box to your site, AdSense delivers relevant text ads that are targeted to the Google search results pages generated by your visitors’ search request.

Earn more revenue

You can maximize your revenue potential by displaying Google ads on your website. Google puts relevant CPC (cost-per-click) and CPM (cost per thousand impressions) ads through the same auction, and lets them compete against one another. The auction takes place instantaneously, and, when it’s over, AdSense automatically displays the text or image ad(s) that will generate the maximum revenue for a page -- and the maximum revenue for you.

Get started in minutes

Becoming an AdSense publisher is simple. All it takes is a single online application. Once you're approved, AdSense takes only minutes to set-up. Just copy and paste a block of HTML and targeted ads start showing up on your website.

Access thousands of advertisers

With Google's extensive advertiser base, we have ads for all categories of businesses-and for practically all types of content, no matter how broad or specialized. And since Google provides the ads, you have no advertiser relationships to maintain.

The AdSense program represents advertisers ranging from large global brands to small and local companies. Ads are also targeted by geography, so global businesses can display local advertising with no additional effort. And you can use AdSense in many languages.

Make extra money with a Google search box

Place a Google search box on your site, and you can start monetizing the results from web searches. Not only does this keep your users on your website longer—since they can search from where they are—it takes just minutes to implement. And you pay nothing to participate.

Show only appropriate ads

Google's ad review process ensures that the ads you serve are not only family-friendly, but also comply with our strict editorial guidelines. We combine sensitive language filters, your input, and a team of linguists with good hard common sense to automatically filter out ads that may be inappropriate for your content. What's more, you can block competitive ads and choose your own default ads. It's your show from start to finish.

• Competitive Filter
  
  Enables you to filter out specific competitors or specific advertisers


• Contextual Filter
  
  Eliminate delivery of ads that would be inappropriate to serve on pages


• Editorial Review
  
  All Google ads are reviewed and approved before being served on your pages


• Customizable default ads
  
  In the unlikely event that Google is unable to serve targeted ads on your
  page, we provide the option to display a default ad of your choice

Customize AdSense for your site

You can customize the appearance of ads, choosing from a wide range of colors and templates. Ditto with your search results page. Your reports are customizable, too. Flexible reporting tools let you group your pages in any way you want so you can view your results by URL, domain, ad type, category and more to learn where your earnings are coming from.



Apply now

You can run Google ads on all or just some of your pages, using AdSense strategically to complement your direct sales team. You'll pay nothing, spend little time on set-up, and have no maintenance worries. You can use AdSense for a day, a month or for however long it pleases you to make a profit-it's your choice.