[betterlabs]

Sorry but IMHO, this is the classic "product looking for a problem" example. There are several things I believe make products like this tough to succeed, most important of which is this: for a transaction-based model to work there needs to be buyers and sellers who go to a marketplace to buy or sell. Without this focused ecosystem, its really tough to make it work. I understand that one could argue that sellers can broadcast across all channels (twitter, facebook etc.) and create a buyer ecosystem in a distributed fashion. But I feel it is merely good theory and cannot work at scale in practice (barring few examples of flash sales, deals etc which have short shelf life and apt for viral / social spread).