With $2 billion revenues that are likely to continue increasing YOY, it looks like an embarrassingly low offer.
http://kara.allthingsd.com/20101203/exclusive-groupon-annual...
http://kara.allthingsd.com/20101203/exclusive-groupon-annual...
At least one compelling academic argument why Groupon's 'deal hawk' business model is not built for sustainable growth:
The survey says that Groupon promotions are profitable for two thirds of businesses and three of five (of all businesses) would run another Groupon promotion again.