A great review of RSS technology, and from a marketing perspective no less. Check out what Microsoft blogger Robert Scoble says:
If you do a marketing site and you don't have an RSS feed today you should be fired. I'll say it again. You should be fired if you do a marketing site without an RSS feed. Saying that RSS is only for geeks today is like saying in 1998 that the Web was only for geeks. No one knows how long this 'honeymoon' will last. But ride the wave - and get into search engines quickly, inexpensively - by submitting your RSS feeds to them.
Read full article: What You Need to Know About RSS