FB could also utilise its existing platform/user base to do much the same thing. Mark Z spending power could set up the best platform with the best coders etc. And do with or with out BTC, which does present a choke point for those not into BTC. Yours/Decent look pretty interesting too but have the same issue. I do feel this sort of thing is the future and only once they reach some tipping point will the megalodons make their move.