Blizzard released the latest patch for World of Warcraft on 5th Dec. Recently, a gold farmer revealed that the new patch had a big gold grinding bug.

During trade, he unexpectedly noticed that after doing trade between two accounts with nothing left on an account, then log out and log in again, the money will remain the same on that account which should be empty. But the money on the other account increased. A level 1 character can use 1 copper to grind 20k gold in 10min. Needlessly to say, grinder's money will increase crazily. One Chinese farmer duped more than 500,000 gold(view World of Warcraft in-game screenshot evidence) and sold them out in several hours.Search the WoW gold prices and DO THE MATH and you will know how much he had earned overnight!!It is really shocking to see such a bug happen in WoW.

Every MMORPG has a special economy of its own. This bug would have brought billions of unlawful gold into the market, which might result in the crash of WoW's economy and directly influence the release of its upcoming expansion. When Blizzard was aware of the bug, they sent GM to monitor the hotels where gold grinding happened. At 11am 6th Dec., the bug was fixed.