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Codex

Category:Feeds

Feeds allow website content to be read in a different format from the actual page. WordPress automatically incorporates Feeds into a WordPress site, and allows customization of the types of feeds and their usage. There are many types of Feeds, including RSS (Real Simple Syndication), Atom/RSS/XML, XML rendering, as well as setting up plugins for RSS-based services like del.icio.us.

Feeds in the FAQ: