It is easier to have just one app for all these reward programs. Imagine of all STEEM front ends from @steemhunt to @steemmonsters were separate blockchains. That would really make things difficult for all the front ends. In the same way having a many businesses using one app with the ability to discover reward programs has a great utility. I don't want to have some punch cards or even loyalty cards from all the places I shop from.

It's still early and not many businesses are using the product. But there is potential for this to grow. If they take things to the blockchain, things would get even better. Nice Hunt!