FF has an intresting point it could be used to look up your name address and such, but chances are the people you play with would be able to get that info anyhow. I think being able to be called out on all the tough guy shit that goes on when you can hide your identity would quickly come to an end for the most part especialy after some one shows at thier door to "continue" the conversation outside... I guess it makes people accountable for the way they act online.
You know, there's like a butt-load of gangs at this school. This one gang kept wanting me to join because I'm pretty good with a bo staff.