Really Simple RSS (yeah, right!)

Hooray, I've finally learned what those little orange RSS feed icons are for! Setting up the bloglines account and subscribing to feeds was not that difficult, but I found myself wondering...why? What is the point? Maybe I just don't have enough sites that i check on a regular basis to make it worth it. However, I think this could be a great thing for librarians to keep up with new releases, book trends, authors, etc.