There is more than one factor contributing to this decline. A competitor trying to gain market shares is only one of them. Someone could well be trying to buy this company. Shorts are trying to cover at lower prices. Insiders want to take the company private. Some investors are trying to get a lower entry point. I doubt that any of them are trying to protect the world against Groupon or consumers from getting 50 percent discounts on their purchase of goods and services. Only a fool would believe this assumption.