Sometimes you're just better off not knowing. Maybe one of those times is when someone unfollows you on the microblogging service Twitter, but now there's a service for the morbidly curious. It's called Qwitter, and it'll send you an email notification whenever your account loses a follower.

Qwitter doesn't need a password or a confirmation. Just put in your twitter name and your email address, and you're all set. You'll start getting messages when people unfollow you, including the latest tweet you'd posted before they pulled the plug. It doesn't work retroactively, so if you were hoping to figure out who's already unfollowed you, you'll still have to do that by hand. In case you have second thoughts about signing up for bad news, there's an unsubscribe link in each Qwitter email.