Google tests out blog ad service

"Google is floating a trial balloon of a service that pairs advertisements with blog feeds. The Mountain View, Calif.-based search company is testing a new variation of its AdSense program for publishers that allows sites to display text or image ads related to their content and get paid by the click."

[Tech News on ZDNet]

Kanoodle, Moreover and Yahoo as well as a number of other startups are testing similar ad services for feeds.