RSS (Really Simple Syndication) is a family of web feed formats used to publish frequently updated content such as blog entries, news headlines or podcasts.
An RSS document, which is called a "feed", "web feed", or "channel", contains either a summary of content from an associated website or the full text. RSS makes it possible for people to keep up with their favorite websites in an automated manner that's easier than checking them manually.
RSS content can be read using new web browsers or software called an "RSS Reader", "Feed Reader" or an "Aggregator". The user subscribes to a feed by entering the feed's link into the reader or by clicking an RSS icon in a browser that initiates the subscription process. The RSS Reader checks the user's subscribed feeds regularly for new content, downloading any updates that it finds.
To start using RSS, you need a the latest version of Internet Explorer or an RSS Reader which displays RSS content feeds from websites you select. There are many different news readers available, many of which are free of charge. Most are available as desktop software that you download and install on your computer. Several web-based news readers are available as well.
List of news readers (Yahoo)
List of news readers (Google)
Once you have set up your news reader, you simply subscribe to the RSS content feeds you like...
Here is a list of available RSS feeds from ArtRev.com