The Mises Institute has a great article by Pete Earle analyzing the reasons behind the hyperinflationary collapse in Diablo 3. Key bit – this:
Considering the level of planning that goes into designing and maintaining virtual gaming environments, if a small, straightforward economy generating detailed, timely economic data for its managers can careen so completely aslant in a matter of months, should anyone be surprised when the performance of central banks consistently breeds results which are either ineffective or destabilizing?