Of course you're going to sell a lot of Groupons. But what was the real cost to you based on your margins from whatever you were selling/discounting? Any repeat business from said Groupon customers once the deals are over?

I think this is the main problem for small businesses that have very slim margins and are not seeing return customers after the deal.

It seems that Groupons may be better for SMB's that are service-based (salons, dentists, spas) and have the margin to give.

http://www.quora.com/Groupon/Is-Groupon-good-for-businesses-...