FeedBurner provides custom RSS feeds and management tools to bloggers, podcasters, and other web-based content publishers.
Services provided to publishers include traffic analysis and an optional advertising system. Though it initially was not clear whether advertising would be well-suited to the RSS format, authors now choose to include advertising in two-thirds of FeedBurner's feeds. Users can find out how many people have subscribed to their feeds and with what service/program they subscribed with.
Published feeds are modified in several ways, including automatic links to Digg and del.icio.us, and "splicing" information from multiple feeds.