I say what you originally said then - if someone needs to be physically prevented from posting here, then maybe they should begin to address the problem at its source, ie get some psychiatric treatment for their compulsive-posting disorder! After all, we could ban them but if they were that addicted to forum posting, they would simply re-register with a new nick, browse the forum with a proxy, and you'd never be done! The effort of blocking these tactics might be time worth spent on a member whose posts were in some way offensive or troublemaking, but for someone who hadn't done anything wrong? I doubt it - why is it AO's problem?