The new, improved Google Profile is a handy way to list all your blogs, social networking sites, etc. You might want to grab your name now while you still can.
I’m also active on Twitter, Facebook, and FriendFeed.
Friendfeed aggregates your blog and social networking sites into one place. Plus, you can add comments and create rooms with custom feeds. I’ve got a room called Financial Scandal which tracks news from multiple sources on Madoff, Marc Dreier, and Allen Stanford
What social networking sites do you use?