I also don't think that an M rating would keep away the people some of the posters in this thread don't want to see in the game anyway. People of all ages are going to play the game regardless. Annoying jerks are going to be in the game no matter what, and we will do our best to deal with them from a CS standpoint and with game mechanics that will hopefully curb unacceptable behaviour.
Lastly, as I've posted in the past, I don't think it's accurate to pin bad behaivor on an age range. There are great players out there whether they are 12 or 60 years old, and there are jerks out there whether they are 12 or 60 years old too. - October 2005
Source: Aradune Mithara