RSS = Really Simple Syndication or Rich Site Summary
An RSS feed is a way to get news and updates from your favorite websites. You need to download an RSS reader and subscribe to the RSS feeds you want. Then, when a website updates, the new info will appear in your reader.
Here is a link to an article about the top free feed readers:
http://email.about.com/od/rssreaders...ndows_free.htm
I haven't actually ever tried this. Your post has made me decide it's time to do it!