The folks at the PokerStars online poker service actively police their games to make sure that bots are not being used to gain advantage.
Here’s a recent post from their Game Security staff demonstrating that they paid a visit to one player in order to witness the playing and playstyle in person.
It ends with the following wonderful quote:
We are pleased to report, however, that ‘rs03rs03’ is human.
(I also thought JWZ’s take on it was amusing. But you would need to have read Neuromancer to get it.)
That’s a hilarious post.