RSS 2.0 is a simple XML based method for publishing information (In most cases, news announcements) to users in a number of different ways. First, in modern browsers such as Firefox, you can create Live Bookmarks which, when loaded, get the latest information from the site, and display the most recent news items. Special programs called aggregators are also available, that download and display the inforamation in a more convenient way. For more information click Here