I run a small forum for some of my RL friends. Recently we have had a visitor who has been posting on my forum, but i dont know who he is. He has different IPs (none match any of my other users) Recently hes been quite rude, and i just would like to know who it is. I am really curius if its somebody we know or a complete stranger who accidently found my site. The question: How do i find out info about this person, using his IP adress? Thanks before hand.