   Looking for resource on known business models
  I'm wondering if there is a nice, neat, central location for known business models in online games, including models dealing with engines as well as singular games.I'm part of a very small team working on an online interactive game.  It is certainly not the same caliber as an MMO, but a friend posited an idea to me the other night that sounded eerily similar to the business model used by Entropia Universe.  The particular type of game we're working on (a MUD) isn't exactly known for its commercial potential, and so we're looking to do something a bit more inventive.  I'm just trying to do my homework here and would love to find a reliable place to start.   
  The speakers at GDC recently discussed the business models. You can get recordings of their talks at GDC Vault.Probably costs money if you didn't attend, but hey, it takes money to make money (it costs money to start a business).   