The Interactive Glossary: Defining the Net
RSS

Depending on whom you ask, RSS is an acronym for Really Simple Syndication, Real-time Simple Syndication or Rich Site Summary. Regardless of the name, the end result is the same. You subscribe to data feeds and get up-to-the-minute information delivered to your desktop or mobile phone.
Feeds can consist of news, sports, weather, blog entries or almost any content that the site updates regularly, including audio and video. The moment new information is published, it is automatically sent to you.
Learn more: Instant Info with RSS