Ah yes, because everyone knows consumers hate saving money, this is why coupons have never taken off in the past. Wait a minute. In 2009 hundreds of billions of actual coupons were used.
Of all the companies people cite for a bubble, you choose the one making money hand over fist? Seriously?
I think the most ridiculous statement people say is that Groupon isn't defensible, guys, Groupon has thousands of people calling companies every day - guys in a garage eating pizza can't exactly do this. (also, if you're saving people money, people have a tendency to remember your brand)