I wonder what Groupon's repeat business is like. Do they convince some small business to price their service incredibly under cost, take their rip, and leave t

I wonder what Groupon's repeat business is like. Do they convince some small business to price their service incredibly under cost, take their rip, and leave the business to deal with 2,000 loss leading customers? I'd love to hear from this helicopter company again in a few months after they've worked their asses off to give out 2,000 cheap lessons all for 2 or 3 repeat customers. That model simply isn't sustainable.