RSS stands for really simple syndication (or rich site summary). It is the tool that enables instant sharing, notification and syndication of new and/or updated materials. An RSS feed is an xml file on the web that briefly describes updates to such elements as blogs, podcasts and wikis.
It saves you time by bringing content from websites your frequently visit to a single location.
Google's FeedBurner is an advanced RSS generator. Subscribe to feeds via advanced web browsers or any of several aggregators. Widgets can also display RSS feeds on your desktop or web page.
You can even embed an RSS feed in your LMS by using Feed2JS.org.