Chinese prisoners labor in World of Warcraft

From the Guardian, yet more proof that world we live in is, in fact, a William Gibson novel:

Liu says he was one of scores of prisoners forced to play online games to build up credits that prison guards would then trade for real money. The 54-year-old, a former prison guard who was jailed for three years in 2004 for "illegally petitioning" the central government about corruption in his hometown, reckons the operation was even more lucrative than the physical labour that prisoners were also forced to do.

"Prison bosses made more money forcing inmates to play games than they do forcing people to do manual labour," Liu told the Guardian. "There were 300 prisoners forced to play games. We worked 12-hour shifts in the camp. I heard them say they could earn 5,000-6,000rmb [£470-570] a day. We didn’t see any of the money. The computers were never turned off."[…]

It is known as "gold farming", the practice of building up credits and online value through the monotonous repetition of basic tasks in online games such as World of Warcraft. The trade in virtual assets is very real, and outside the control of the games’ makers. Millions of gamers around the world are prepared to pay real money for such online credits, which they can use to progress in the online games.

So the same country that imprisons kids for "internet addiction" forces prisoners to plays hours of online games?