RSS (Really Simple Syndication) is an XML format originally designed for sharing news through text feeds. It does so by providing subscribers with abstracts of news and other content and providing links to expanded versions of that content. Users are then able to stay current with news and information they seek, following updates, changes, or revisions in material of interest.

Its expansion to include audio feeds has made it an integral part of podcasting. By means of an aggregator, which checks RSS feeds for preselected material, content can be downloaded to the desktop in the background at pre-determined times or listeners can be notified by e-mail of any new developments or revised, updated content.

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