The site offered one coupon offer (called a "groupon") per day in the city. A groupon requires a certain number of people to sign up for it or it does not become available to anyone. For example, a $50 dinner coupon redeemable at a $50 dinner for $30. specific restaurant might be sold for $30. The consumer gets a Groupon would keep approximately half the money paid by the consumer for the groupon ($15) and the remainder would go to the restaurant. Thus, the restaurant gets $15 for its $50 dinner, but it has a chance to impress a new customer and gain that customer's return business. Further, the restaurant makes no upfront cash outlay, as it would i it were purchasing advertising