This is the best explanation of RSS that we have stumbled upon. Actually it's about Google Reader, which happens to be the best reader available for RSS content. Just watch the video and you'll find out that Google Reader is like an "inbox" for the web. RSS is a protocol that makes this possible - just like SMTP and POP are the protocols for the e-mail. You don't really have to know the details to be able to take advantage of this exciting new technology!

Let it come to you, instead of chasing it around! :)