Groupon hit the headlines when Gap announced that it made sales worth of $11 million in just one day on Groupon. That news showed the world what Groupon is capable of.Groupon was again under the limelight when it rejected a massive offering of $6 billion buyout offer from Google, leaving the search giant with a missing part in its advertising arena. However, Groupon’s business model is easily copied. There are about 200 Groupon clone sites currently operating in the U.S and another 500 operating overseas. China alone has 100 sites offering similar services, says this infographic