Frictionless Insight - On the Drop in World of Warcraft Subscriber Numbers.
That leaves us assuming that World of Warcraft related GAAP Net revenues (including "subscriptions, boxed products, expansion packs, licensing royalties, and value-added services") were $181 million in the latest quarter compared to $359 million in the comparable quarter a year earlier. That's a 50% drop.

There are substantial assumptions in the above calculations, but there's no question that Activision Blizzard's cash WoW-cow is floundering. Clearly, the company hopes that Mists of Pandaria, coming out on September 25 will fix things. Can anthropomorphic pandas fix the problem?