I'm always intrigued by how some startups can launch two-sided marketplaces so easily; most fail.<p>I always tell clients that its like launching two businesses at once, and they both have to succeed at the same time for either of them to work.<p>Not for the timid.
Looks awesome, seems like it totally fits the needs of shoppers, does it work for retailers? Not sure, but there could be a lot of people that will use it to get a discount for something they were going to purchase anyway?