OneSeason seems completely awesome: "Players are bought and sold under four-letter identifiers (Manny Ramirez, for example, is "MANY," Sidney Crosby is "CROS") known as synthetic ownership interests, or SOIs. Their prices are determined by supply and demand. If someone wishes to buy and sell SOIs, it's as simple as creating a username and password, dumping $10 into an account and deciding which players you wish to add to your "sportfolio." ". [ WSJ]