ChasNote

A Screen Digest report cited by PaidContent says massively multiplayer online games (World of Warcraft, Second Life, etc) generated $1 billion in revenue from their North American and European customers via subscriptions, in-game advertising and products and services in 2006. World of Warcraft took in most of that money:

“It’s a pretty big figure, but if you note that World of Warcraft has 3 million subscribers in the west (out of 8 million globally) paying monthly subscription fees of $13-15, it becomes more believable. WoW accounted for 54 percent of the subscription market in 2006, pulling in $471 million in revenue.”