As innate as it is with any platform, Fair Ninja having Yoshi coins is expected.
And though the rewards program greatly depend on the usage of Yoshi coins, i am glad to know that Fair Ninja will also accept Bitcoin, Litecoin and Ethereum for payments.
This way, the users can maximize the exchange value of each coin and utilize whichever of the mentioned coins have the best profitability in terms of buying power.
I'd say diversity is always good in any economy and i'm glad Fair Ninja exercises the same on their platform.
Accepting cryptocurrency is such a great advantage in a marketplace, this can help ease payment options for customers who doesn't have any credit or debit card available. Bitcoin, litecoin and ethereum are a good choice of payment as all these coins are pretty much establish in crypto and people are mostly familiar with these coins.