The AdSense API is a free beta service that enables you to integrate Google AdSense into your service offerings, letting your users create an AdSense account or make changes to an existing account, all without leaving your website. Its basic features include account creation (users can create an AdSense account), account management (users can create and modify their AdSense ads), and reporting (users can view ad performance and earnings reports).
The AdSense API is ideal for developers whose users create their own web content such as: web hosting, web publishing, blogging, and social networking applications.
BloggerBusiness type: Online blogging community
Blogger makes it simple and easy for users to monetize their web content with Google AdSense. Read more

Business type: Social networking
Flixya uses Google AdSense and the AdSense API to remain profitable while sharing 100 percent of revenues from user-generated content. Read more

Business type: Online publishing
HubPages earned 90 percent of its revenue from Google AdSense and the AdSense API. Read more
Business type: Consumer rating site
RateItAll used Google AdSense and the AdSense API to boost revenue and reward member contributions. Read more