User blog comment:Wagnike2/Outlaws to the End Co-Op Mission Pack DLC/@comment-1951880-20100507173345

Along with that, Wagnike2, the more players, the more possible posse members, which means multiplayer will be that much more active, especially in posse vs posse situations. So again, even if it is a marketting technique, I say keep doing it, it's free, and it builds up the community and may lead to even more DLCs or content being added. Besides, there are those people that will beat the game in a good amount of time, you don't want the players getting immediately bored with it if they've done everything, so..