username and IP banning are both useless. person can always register under other name and do all the shit again. and regarding IP, even if he has permanent 24/7 connection, he can always contact ISP and tell that someone has an pinch on him, and ask ISP to change his IP...but when it comes to me, i wont ban complete ISP, or IP, or username, or country. but i promise, it'll be hard to get here again after my ban