And among the many reasons of Fair Ninja building their platform on top of the blockchain is this:

Blockchain technology has all the right tools, controls, and safeguards tobe the underlying infrastructure for robust and flexible international online classifieds platform that will ultimately increase the value of the platform for both sellers and buyers. #FairNinja #Security

As twitted by Fair Ninja themselves: https://twitter.com/FairNinja/status/1008707991762296832