By the way Hak... You might check out this hack by Logician as well -
https://vborg.vbsupport.ru/showthrea...threadid=37549
It's a simple banning method that puts a cookie on someone's computer where they can't log out. It's been one of my favorite banning methods since I found it. You'd be amazed how many people will never think to clear their cookies when they've been banned. That combined with good old fashioned IP banning usually does the trick for me.