Unfollowing a Tweetist. Who's un-following you?

Do you let someone know you are going to un-follow them or do you just split? Seems the right thing to do would be to send them a message, letting them know why you are bolting. Maybe you're trying to follow too many people, or the person isn't posting anything that interests you or they made a post that offended you. Whatever it is, don't just bolt... Give them a reason.

Wanna find out who's following you, or un-following you, and why...
http://useqwitter.com/