I tried out the site, it works pretty well but could definitely use some improvement. I have a similar blockchain dapp (without the mechanism for payment) but I gave up on it because the cost to operate it on the blockchain could deter people from using it. But keep up the good work!
Indeed the cost could be an issue for true "mass adoption". That's one of the reasons 0x60 is on testnet for the time being until we can figure out the best possible use case. Or it could remain on testnet for a little while longer, who knows.
