Punishments for a Twitter bully?

[Sadie]

How will my twitter bully be punished?
What kind of lawsuit or criminal charges could a person face if they harassed someone on Twitter? I have been horribly treated by someone on Twitter. They have sent six increasingly nasty Tweets to me about my divorce and my child. The Tweets were not threatening but told me I deserved what life had given me. I have engaged with them and now want to find out who they are and seek some sort of retribution. What sort of charges would they face and what are my options? I know people in law enforcement who could help me and have some good money to support this.

[Rira]

Six tweets do not constitute harassment, especially if they are not threatening you. Pull up your big girl panties, get off twitter, and get on with your life. If you 'engage' them, you are just making it more fun for them to continue.

[Patriots]

This is why social networking sites are bad for you