That said, I would never invest in Groupon,
simply because I don't use the product ever.
Indeed. I tend not to invest in things I don't understand. I've never understood the appeal of most of the deals on Groupon and have never bought a Groupon. So, I'll be staying away from their stock, as well.
Company IPOs, people buy or don't buy for tons of reasons, the company executes on their plan, and the market adjusts.
Trying to label a company a ponzi scheme seems like little more than sensationalism to me.
That said, I would never invest in Groupon, simply because I don't use the product ever.