RSS feeds

Here's two good explanations/examples of what RSS feeds are and how to use them. I've managed to add feeds for myself too!
http://weblogg-ed.com/wp-content/uploads/2006/05/RSSFAQ4.pdf (this has a creative commons license) and Leigh's "Using RSS" http://learnonline.wordpress.com/2007/03/21/using-rss/