The trouble is though is that short of banning usernames or IP addresses, there's really a not a whole lot more we can do. I could, for example, go and troll the crap out of a forum, any forum, get my entire university's network banned from that forum, as well as any and all usernames I used, but that would not at all stop me from taking the MacBook down to the local Maccas, ordering a thickshake and fries, jumping on the WiFi there, and joining back up.