Some are easier to spend, but all can be traded for other goods even if they can't directly be used to pay your taxes.
Gift cards are a credit system (a proxy) for existing currency.
No one trades credit scores for goods.
The next three function are bribing a socially powerful person, because they don't work in reverse - Kim Kardashian is never going to do me a favor in exchange for mentioning her on my IG.
Trading cards are scarcity trading, not fungible proxies for wealth. I've gotten a reduction in price for an antique via a cold Coke, during a hot outdoor antique show, but that doesn't make cold pop cans currency - I wouldn't have gotten twice the discount for two of them.
The key is to take all the gift cards and loyalty points and make them interoperable with each other. That’s part of our Intercoin project