People posting their personal information
 

A few days ago two people decided to post thier personal information (address and phone number) on my forums. They did it to mock someone who was concerned about giving out their real name (only their first name).

Anyway, do I have to do something about this and can I get in trouble? I didn't ask them to give out this kind of information. Both of them are internet-savvy but they just thought it would be really cool to give out their info.