RSS

RSS is a Web content syndication format.
Its name is an acronym for Really Simple Syndication.
RSS is a dialect of XML. All RSS files must conform to the XML 1.0 specification, as published on the World Wide Web Consortium (W3C) website. Subordinate to the <rss> element is a single <channel> element, which contains information about the channel (metadata) and its contents.

(extracted from http://blogs.law.harvard.edu/tech/rss)

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