study done by IBM and Seriosity claims:
Hundreds of thousands of players -- sometimes millions -- interact daily in highly complex virtual environments. These players self-organize, develop skills, and settle into various roles. Leaders emerge that are capable of recruiting, organizing, motivating, and directing large groups of players towards a common goal.
Of course, IBM and Seriosity are attempting to sell MMO-inspired business solutions, but the study itself is interesting even to those of us who aren't in the market. In it, IBM and Seriosity suggest that within MMOs, players need to organize in order to accomplish goals -- and the skills of the player who organizes your guild's raids are no different from a manager in a traditional office environment.