Excerpt from the article:

DAVID, a 34-year-old living on the east coast of the United States, is a big fan of World of Warcraft but is anxious that his heavy workload is not leaving him enough time to play, and therefore make progress, in the online game. Rather than see his friends race ahead of him, he contacts a Chinese “gaming-services retail company” which sells him some WoW gold, the game’s electronic currency, which he uses to buy magic potions and other stuff that boosts his power as a player. The gold was bought, in turn, from a cybercafé in a Chinese town which employs young professional gamers to play WoW for up to 60 hours a week to earn the online currency.

Here’s another proof that the market for virtual goods is huge. We have third-world labors slaving to mine virtual gold. Click on the link above to read the rest of the article.