I just downloaded Flock, the Social Web Browser, and I find it thoroughly impressive how it aggregates all my data in a nice tidy browser. First, you can obviously add all your social sites (Facebook, Twitter, etc.), but you can then add things like email, RSS feeds, photos, youtube, Delicious, and even blog sites. Matter of fact, I’m using Flock to create this Blog!
If you love all the social web sites like me, you should give this browser a try! Here’s a link.