The Womply Team about Groupon:
>Instead of taking a cut of a consumer’s future paycheck in return for upfront cash, Groupon takes a cut of a merchant’s future revenue. Merchants miss out on this revenue because they serve hundreds or thousands of customers at a steep discount (typically at a point well below their marginal cost of serving that customer).
This argument is not a perfect fit, but it is a very interesting take on the Groupon business model.