I've also seen restaurants offering such deals ask if you're using a GroupOn voucher before presenting you with a menu, the menu you're then given is not the sa

I've also seen restaurants offering such deals ask if you're using a GroupOn voucher before presenting you with a menu, the menu you're then given is not the same as the usual menu. Items are more expensive (over-priced I would say), and the selection is narrower. From a business perspective the failure to convert into repeat business has long known to be a problem, but now having experienced GroupOn as being a second class experience I simply won't be using it again. In fact, the limited experience of GroupOn in our household has been such that they've successfully made us dubious of the entire offers/group-buying thing and leave us preferring to get personal service and avoiding the offerings of GroupOn and all of their competitors.