WWW FAQs: What is an RSS aggregator?

2004-09-14: an RSS aggregator, or reader, is a program which fetches many RSS feeds and intermixes stories, typically in chronological order. Aggregators can be implemented as part of a website, like the O'Reilly Developer Weblogs page or the syndicated accounts feature of LiveJournal, and this is probably the approach that brings RSS content to the largest audience. There are also excellent RSS reader applications for individuals; hebig.org offers an impressive, if slightly dated, list of these.

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