Restaurants should either not go for Groupon. If they do, they have no business despising Groupon customers. Doing that makes no sense. It is they who decided to go for it in the first place.
Absolutely. But I think there is a disconnect raganwald points out between the owners / managers who had the idea of going to groupon and the staff who feel it's effects.
Ultimately, Groupon needs to understand this and work this into their sales script/recipe so new restaurants/customers can prepare for the Groupon event.
However, they may be too busy preparing for IPO so the investors "get paid".