Goes back to Diablo II LOD online play (before 2005), but there was essentially a bug that allowed online players to acquire too many Stones of Jordan (SoJ). To encourage people to sell them off in large numbers,engineers came up with the Uber Diablo monster that would spawn on servers if enough SoJs were sold to vendors (why would you sell them?). Killing Uber Diablo yields anThis "bug" turned into a whole sub-culture in the game. There were (are?) IRC chat servers dedicated to following the SoJ sell counts on theservers. There is still a program called Kiss Clone Hunter that helps get onto servers that are likely to spawn Uber Diablo (aka Diablo Clone). Also, ironically, many people began to clone SoJs to convert them to Annihilus charms, so the solution to the bug in a way back-fired. But the popularity of the game grew in part from the clone hunting.