InformationWeek is reporting that the Chinese government has declared a ban on the sale of virtual goods for real currency. This move is poised to shut down a several billion yuan a year business that has been growing by leaps and bounds every year. "The trading of virtual currency for real cash employs hundreds of thousands of people worldwide and generates between $200 million and $1 billion annually, according to a 2008 survey conducted by Richard Heeks at the University of Manchester. He estimates that between 80% and 85% of gold farmers are based in China. [...] Game companies typically forbid gold farming but committed virtual currency traders find ways around such rules. Some game companies have recognized the futility of trying to ban the practice and have built virtual commerce into their game infrastructure."