As someone else noted the sample is very small, likely to only cover a dozen restaurants, so were talking about 6-7 places that wouldn't use it again. Also if y

As someone else noted the sample is very small, likely to only cover a dozen restaurants, so were talking about 6-7 places that wouldn't use it again. Also if you look at the comments made by the restaurants a lot were complaining about fraud (people photocopying groupons) and low tipping rather than lack of repeat customers (although there are a few along those lines as well).