But then I think, what was it that sucked billions of dollars out of the newspaper classified ad business? Was it another multi-billion dollar venture, or was it a plucky little start-up that (while now worth a lot of money) killed a newspaper industry cash cow while operating on a relative shoestring?
The difficult part of creating such a competitor to sites like Groupon would be to find an inexpensive way to verify the deals posted - pranking would quickly undermine such a service - but if you can find a cheap way to verify deals you would be in a good spot to knock out the multi-billion dollar "deal of the day" sites with your inexpensive, more inclusive alternative.
