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Media RSS Module
An RSS module that supplements the element capabilities of RSS 2.0 to allow for more robust media syndication.
search.yahoo.com/

blogChannel RSS module
A RSS module that adds elements at the level that are common to weblogs. Written by Dave Winer
backend.userland.com/

Extending RSS 2.0 With Namespaces
Extending RSS 2.0 With Namespaces by Morbus Iff
www.disobey.com/

What is RSS?
A how to covering all the various versions of RSS.
www.xml.com/

RSS DevCenter
A collection of essays and guides to RSS, from O'Reilly, the technical book publisher.
www.oreillynet.com/

mod_rss091
An RSS1.0 module that provides sideways compatibility with RSS 0.91 by providing a modularized version of the elements added to 0.91.
groups.yahoo.com/

rss-dev
The email list for the RSS interest and working groups, discussing the present and future of the RSS format, as well as working on uses and development. Responsible for RSS1.0
groups.yahoo.com/

RSS: Lightweight Web Syndication
RSS, a simple XML application to describe web site headlines, has had such enormous success that it has been pulled in many directions. By Rael Dornfest, XML.com.
www.xml.com/

RSS in Government
News about how RSS is being used by international, federal, state, and local governments.
www.rssgov.com/

Registering and Discovering RSS Feeds in UDDI
The use of Universal, Description, Discovery and Integration (UDDI) to catalog and discover RSS news feeds.
www.gotdotnet.com/