The Story Of Groupon: From Failure To An Industry-Changing, Profit Machine
mixergy.com
mixergy.com
I like how Andrew Mason owns up to a mistake, around ~47min in, regarding a company they bought in Brazil that was creating discounts just to test the market without actually landing those deals. Good on him. Looks like they are going through some growing pains.
Might be hard to find a "Retail Owner" here on HN.
There was another article linked in that thread about a helicopter training school having a similar experience: http://blogs.law.harvard.edu/philg/2010/03/19/groupon-market...
People in the HN thread I linked have other interesting things to say, too. From what I can tell, it looks like there's a ton of potential to get your name out there, but you will almost certainly have to be able to accept an initial loss to do so. I don't have any experience with it personally, though.