I don't really think there is one out there that can't be hacked around
So what I always do is add a unit in the corner of the map that is impossible to see without maphacks, and when a player clicks on it, BAM kicked
Finally finding about some of the bots that are flooding the users online - bytespider apparently is a huge offender here - ignores robots.txt and comes in from a ton of different IPs
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.