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RSS is a way of finding out about updates to a site without having to visit the site in a web browser. It's similar to email, but it is automatic. The site comes to you instead of you having to go to the site.

Feed readers let you subscribe to feeds, checks automatically to see when they're updated, and then displays the updates for you as they arrive.

On the web: Many people choose My Yahoo!, Google Personalized Homepage, My MSN, or My AOL to read feeds right in their web browser. On the computer: Programs like Microsoft Outlook and Mozilla Thunderbird have some feed capability built in, but there are many programs dedicated to it. NewsGator.com has more information plus free readers, or here's a rather thorough list of readers.