PUBLIC MARKS from bader with tags atom & feed

This is the W3C Feed Validation Service, a free service that checks the syntax of Atom or RSS feeds.

Atom defines a feed format for representing and a protocol for editing Web resources such as Weblogs, online journals, Wikis, and similar content. The feed format enables syndication; that is, provision of a channel of information by representing multiple resources in a single document. The editing protocol enables agents to interact with resources by nominating a way of using existing Web standards in a pattern.

People who generate syndication feeds have a choice of feed formats. As of mid-2005, the two most likely candidates will be [WWW]RSS 2.0 and [WWW]Atom 1.0. The purpose of this page is to summarize, as clearly and simply as possible, the differences between the RSS 2.0 and Atom 1.0 syndication languages.