If you're new to the world of RSS feeds -- which deliver to your desktop new posts from your favorite blogs or sites with RSS feeds -- you may want to check out Newsgator.
Newsgator lets you easily organize your feeds into folders that you can name however you like. When a new entry comes in, the folder turns bold and shows the number of posts in the folder.
I've been using it for a while, now, and have found it to be a very efficient, easy way to track the sites I like most. (Cuts down on needless web surfing that way.)
Give it a whirl and see what you think!