Random question.

If you look at my profile you'll note I keep track of the games I'm playing and the music I'm listening to through last.fm and Xfire. I was wondering if there's any similar program for books that any of you might know of that you can link/show on your LJ/Myspace/Facebook/and so on profiles? I'm terrible at updating profiles with that information and would really like to keep a more tidy running log of it.

Crossposted once, sorry if you see this twice.