Rockstar has grown tired of the cheaters on the Max Payne 3 multiplayer, as I’m sure most people have, and they decided to do something rather neat about it. Basically, they have created a “cheaters pool” in which cheaters they will only be able to play against other cheaters. Rockstar says:
“Starting today, anyone we’ve found using hacked saves, modded games, or other exploits has officially been cordoned off in a dedicated cheater pool, confined to wallow with other unscrupulous reprobates.”
Go Rockstar!
The best part is that these cheaters are still able to play, which makes it less likely for them to just create another account or find some other way to get around the usual ban other companies implement. Now the cheaters can all play against each other, so the non-cheating community can play safe and only worry about their skill versus the opponents skill.
Check out the cheater pool FAQ for more information on the matter, and you will also notice that you will not be put in the pool for camping, use of foul language, or acting abusive in any other way. So the average jerk or camper can breathe easy and do what they do best, but how do you get put into this pool?
“Examples would include invincibility, infinite adrenaline, boosted XP scores, impossible in-game activity detected by our servers, or leaderboard scores that are impossible to achieve through legitimate gameplay.”
So keep that in mind if you plan on trying to accomplishing any of those things. Also, if you wind up in the pool then are granted permission to leave it and play with the regular community, but are caught cheating again you will be banned permanently. If you want to know how to rat out the suspected cheaters, go here, and game on!
[SOURCE]

Nice one Rockstar hopefully all the cheating losers have fun talking crap in the loser lobby
I hope they feel the pain of being cheated against and realize just how annoying it is. I also hope other companies implement things like this, there are lots of games which are ruined but cheaters.