I just joined Good Reads -
http://www.goodreads.com/user/show/1041498. You should totally add me as a friend - you know you want to*.
I used to use Librarything, but this seems to have a feature set that's more to my liking. I was able to just export from LT to GR, though, thankfully, so I don't have to reenter all of those books manually :o)
*unless you don't. Or you don't use Good Reads, in which case, ignore this!