The advertisements are controlled and managed by Google and Web publishers simply need to create a free AdSense account and copy and paste provided code to display the ads. Revenue using AdSense is generated on a per-click or per-impression basis. It is free to become a verified website publisher in the Google AdSense program.
Google currently offers a number of different AdSense programs, depending on the type of content you will place the ads on (e.g. webpage or RSS feed). Some of the more common programs include:
AdSense for content: display ads on a website
AdSense for search: display ads in search results on a website
AdSense for mobile: display ads on a mobile site
AdSense for feeds: display ads in RSS feeds
AdSense for domains: display ads on unused domains
AdSense programs are also available to qualified publishers and developers. Qualified publishers may use AdSense to drive revenues for iPhone applications, video or Web browser games. Google currently offers the following AdSense programs for qualified publishers:
