[andyfox]

Infamous Commerce player Iris was sent home today for marking the cards. She likes to get a lot of new set-ups when she's losing and since Commerce only allows one new set-up per hour unless there is a damaged card, she takes it upon herself to damage the cards. My neighbor and I caught her and she was sent home by the floorman. Of course, she'll be back tomorrow.

She doesn't mark the cards to cheat, but rather to get new set-ups. But it's not impossible she cheats when she marks them, or that other players are aware of her habit and use the marked card(s) to their advantage. Be alert if you find yourself in a game with her.