Depends on how strongly I feel that I was wronged.
I think I'm more prone to finding out what the person holds most dear and screwing it up. Financially and professionally seems to be the most effective. I wouldn't want to do anything physical to anyone, although Carrie Underwood's "Before he Cheats" is appealing.
The most I've done so far is tell people off and write angry letters. Not very vengeful revenge.
