Really Simple Syndication or Rich Site Summary (RSS).

RSS is referred to as Really Simple Syndication or Rich Site Summary. This tool is used to feed information about resources on the World Wide Web (www). It helps make use of the richness of the www, filter out what we want from what we don’t; automatically feed information from your favourite websites; and share great resources with others.

RSS is an eXtensible Markup Language (XML) format that uses the Resource Description Framework (RDF) for representing information on the www. Atom is another format based on XML technology. For many of us, our first step into the world of networked learning is subscribing to an RSS feed, probably using a web based aggregator like bloglines. RSS is the connecting fabric of web2.0 services, providing the conduit for information flows between distributed networks. Content syndication or the re-use of information from others on the network, often characterised as mashups, is what sets web2.0 services apart from the preceding phase of the web, comprising static pages linked by URLs.
(adapted from Stephan Ridgway accessed 18/12/06)

RSS Resources

RSS and eLearning
Learn more about RSS
Feed.Informer - Display items from RSS feeds on your blog, site etc., Mix multiple feeds into a single feed and much more.
RSS: What it is, Where to get it, How to make it, How to use it - A good site for resources on all things RSS
(information from Sean Fitzgerald's wiki accessed 18/12/06)