The Google search engine, and its partner sites, are used more than 200 million times a day. AdSense delivers text-based Google AdWords ads that are relevant to what your readers see on your pages, and Google pays you.
AdWords ads are displayed along with search results on Google, as well as on search and content sites in growing ad network, including AOL, EarthLink, HowStuffWorks, and Blogger.
AdSense is different from other ad networks, because run ads that will interest your users; leverages the award-winning Google search technology; filter unwanted ads; once you're accepted, a simple cut and paste javascript code is all you'll have to apply to start making money.
For best results from AdWords optimize your content and keyword targeting, target your audience, create compelling ads, and link to relevant content. For best results from AdSense place ads on pages that predominately contain text. Only text is used to determine a page's context.