I just wrote an article for Dave Schoof about RSS feeds. In it, I describe what an RSS feed is and why you’d want to know about it. In a nutshell, feeds let you get blogger articles, posts and updates without having to check back to the blog site each day. With a feed, you will get updated on new posts as they get published.
There are a number of advantages post provide. One major advantage is that you can track many blogs from one central location. For instance, currently, I track posts on and read over 100 blogs (and the number is growing). Instead of having to take all the time to visit each blog every couple of days, I can open a program (called a feed reader) and it will update me on all posts made to each blog I have feeds to. Huge time saver.
Anyhow, check out the article for more.