what is a feed burner?

FeedBurner is a news feed management provider launched in 2004.[1] FeedBurner provides custom RSS feeds and management tools to bloggers, podcasters, and other web-based content publishers. Services provided to publishers include traffic analysis [2] and an optional advertising system. Though it initially was not clear whether advertising would be well-suited to the RSS format,[3] authors now choose to include advertising in two-thirds of FeedBurner's feeds.[4] Published feeds are modified in several ways, including automatic links to Digg and del.icio.us, and "splicing" information from multiple feeds.[5] FeedBurner is a typical Web 2.0 service, providing web service application programming interfaces (APIs) to allow other software to interact with it. As of June 22, 2007, FeedBurner hosted 779,820 feeds for 454,969 publishers.[6]

On June 3, 2007 FeedBurner was acquired by Google Inc., for a rumored price of $100 million.
most popular link http://www.feedburner.com/