My brother writes software to play online poker. He reckons that at least one or two seats at every low stakes table is taken up by a bot, and that it's not uncommon to have tables where every seat is taken by a bot.
and if those bots were any good they'd be able to play at higher stakes...
the better sites crack down on bots, others turn a blind eye to them - I'd be more worried about collusion online than botting at the moment
