RSS Feeds uses a standard web feed format to publish frequently updated information: blog entries, news headlines, audio, video. An RSS document (called "feed" or "web feed") includes full or summarized text, and metadata, like publishing date and author's name.
RSS feeds enable publishers to distribute content and facilitate public access A standard XML file format ensures compatibility with many different machines/programs/software.
RSS feeds benefit users who want to receive timely updates from favorite websites or to aggregate data from many sites.
Subscribing to a feed removes the need for the user to manually check the website for new content. Instead, newsreaders like http://www.netvibes.com constantly monitors the site and informs the user of any updates.