I've believed for a long time that it isn't what meanspiritied things others say about you that matter, it's what you say to yourself. My grandmother told me once that it wasn't what came out of a person's mouth that made it dirty, it's what they put in it. (I had been chastized for calling a cousin an asshole when he was bullying me) It was her way of telling me that it's never about someone's perception of you, it was about your perception of yourself that mattered.
There's a new interactive blog called The Hate Project.. See how it works and the philosophy behind it here. The idea is to take the power back from the people you let have that kind of control over you to make you feel badly about yourself.
I'll be submitting my own pictures soon.