Alloy - I looked at that too. It's just one of those business models that's far too tough - unfortunately imo. There have been several attempts to do real-world rewards networks. The trouble is scale - you need to spend so much advertising to get people to commit to your rewards program, it's almost as tough as getting someone to become a purchaser of goods in the first place. Add the complexity of doing through a token and I am just not convinced. Be careful with this one.