IGN - World of Warcraft: Cataclysm?

IGN - It's a problem that most massively multiplayer online game developers might surrender vital organs to have: over the past 15 months, Blizzard Entertainment's 400-lb. virtual gorilla, World of Warcraft, has dropped from 12 million to a pitiful 10.3 million global subscribers (as of November 8, 2011, anyway). It's a precipitous 14.1% drop -- owed, one way or another, to the somewhat polarizing World of Warcraft: Cataclysm expansion. But what exactly has happened to the MMO space's star attraction?

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