I've been playing on the play money tables at bovada.com this week since the holidays are slow times at work.
Since one area I am interested in is automated betting, investing, etc., I did some research on poker bots.
The possibility of collusion among bots is one thing online poker players might want to be aware of.
I knew that there was open source poker bot software available because I used to use it before it became so hard to fund an online poker account and the Fed started shutting them down.
The poker bot software I used didn't really play automatically, but it did detect my cards and the flop cards. The software would calculate percentage of winning and, if my memory is correct, would suggest an amount to wager.
My concern now is that it would be possible for a person or persons to own several poker accounts and have the bots play on the same table and share information with each other about the cards that each bot has been dealt.
I can imagine all sorts of possibilities.
Imagine a high stakes game with 6 seats at a table and four or five of the players are bots. The bots would know all the cards being dealt to themselves and could share that info to make bets. Or a single person could be watching all 5 bots and bet the best hand against the unsuspecting human opponent.
Here is a link to open source software for bots:
http://code.google.com/p/openholdembot/
The first thing it says is that this software cannot be used for collusion. Like that's going to stop someone.
As in all things concerning money -- caveat emptor.