Hmmm, well, i havn't seen anything related to "code" cheating like the "x" button one. But there are a few people that have done this to me, the will chat, and as soon as they send, they'll throw out a move. And since you then are in "chat-mode" you can't control your character. And he gets a free hit... I usually whomp them after that. But everything else is just lag related.