Hey there thorRJ! We use TokenDesk as a fiat solution (https://www.tokendesk.io/ico/review-network/), and they allow you to use a credit card for the purchase - meaning it basically depends on your bank's support for currency conversions and if you have multicurrency account.

Talking about the platform, users will be rewarded for writing reviews as well as for answering market research surveys. Review writers get token rewards for each review that passes the process of community validation. You can read more about it in our whitepaper