I spent some time as a contractor working for a "Social/E-commerce" startup. They were heavily customer development driven and found out early on that chasing a

I spent some time as a contractor working for a "Social/E-commerce" startup. They were heavily customer development driven and found out early on that chasing after Blippy, and similarly Swipe.ly (who was doing the same thing at the time but looks pivoted now) would be a waste. They found this because everyone (potentiel customers) they talked to showed no signs of interest in the idea at all.