A frequent question I get is, “what is RSS and how do you use it?†RSS has been around for a number of years now. It stands for Really Simple Syndication. It is a way to electronically disseminate your content across the worldwide web. The most common usage is to post content on your blog and then “ping†the various RSS aggregators with your “RSS feed.â€
http://www.rssfeedguide.com/rss-seo.php
http://www.feedforall.com/feed-tips-seo.htm