As reported before, AdSense API is a service for community-driven sites that lets the users of the sites integrate their AdSense accounts and manage them. It's useful for social networks, blog hosting or web publishing sites that have more than 100,000 page views a day.
Sites will be able to:
* programmatically display ads
* show search boxes
* add referral buttons
* filter ads with specific URLs
* generate reports on AdSense accounts
So they'll be able to do exactly the same things as Google AdSense site.
AdSense API uses SOAP, so there is support for many programming languages, including PHP, Perl, Java, C#.
This new Google API will boost the growth of many startups and Web 2.0 sites. Imagine Digg uses AdSense API: the site will display ads next to your submitted story and you'll get 50% from the revenue. That means users will submit more good stories and less spam blogs.
Easter egg: guess who was the first beta tester for AdSense API? Blogger.