It'd be nice to be able to keep a log of the last few places an account was accessed from. That way I could tell if one person is using multiple accounts from the same IP (but diff emails, etc.). I don't want to enable the IP address line in every post, as I prefer that to remain private. But I'd like to know for my own purposes. Perhaps a "last 5 unique hosts" that can only be seen by the admin in the user's profile?