Yahoo Pipes - http://pipes.yahoo.com/ An interactive feed aggregator and manipulator. List of 'hot pipes' to subscribe to, and ability to create your own (yahoo account required).
What is RSS/XML/Atom/Syndication? - http://www.mezzoblue.com/archives/2004/05/19/what_is_rssx/ Introduction to syndication from the weblog of Dave Shea.
Wikipedia: Web Feed - http://en.wikipedia.org/wiki/Web_feed Encyclopedia article on the topic, including benefits, technical definition, and basic information on how to read feeds.
FriendFeed - http://friendfeed.com/ Allows you to build a customised feed of made up of content your friends on other collaborative sites have shared, including news articles, photos, videos and comments left.
GeoRSS - http://georss.org/ Provides details of how to add geographic data to RSS and Atom feeds using Geography Markup Language (GML) or the simplified GeoRSS standards.
FeedTree - http://www.feedtree.net/ Collaborative RSS and Atom delivery using using peer-to-peer multicast. Includes information for readers and publishers.
What is this RSS, XML, RDF, and Atom Business? - http://www.internetviz-newsletters.com/internetviz/e_article000224613.cfm Article from the eNewsletter Journal, including consideration of the likely impact on the online newsletter business.
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