playBunny: In the distant past I had a FS called the Killing Machine where we climbed to the top of the checker ratings. On the way we encountered many program users and our team was not only able to detect who was using them but which particular program they were using. At first we tried to avoid such people but before long we had assembled enough brilliant young program busters where we took them on at their own game and defeated them. Lots of effort and hardly recommended but it is possible to identify the cheaters. :)