I was very skeptical of the poker bot thing -- until I realized what kind of stakes we're talking about. It's microstakes -- like 1 cent/2 cent, no limit, $2 max buy in.
Basically, the people playing at that level are brand new beginners, regulars having some fun and playing crazy, or bots. So it's not surprising that there are bots available that can beat that game.
Obviously, it's not going to be a huge amount of money, but from what I've seen, with rakeback and bonuses, you can make at least a few dollars a day, consistently. For each instance of the bot. You could run several instances, rotating between poker rooms. Some (most?) rooms will allow multiple accounts per household, as long as they are real people. Some people have small bot farms, playing 6 tables at a time at 2 or 3 poker rooms. The money can add up.
For the poker rooms, it's a balancing act. The real threat is colluding bots. Apparently there are some rooms that look the other way for certain bots (that I'm guessing they are confident can not collude.) In poker, winners are still creating more revenue for the house.