NAU uses the benefits of the blockchain technology to ensure the transparency of all payments and commissions, and also makes it possible to process rewards paid by retailers directly to the eligible affiliates. Could it be done without blockchain? It could be, but the costs would be much higher and all NAU participants would have to tackle all the problems local retailers and their potential affiliates face nowadays and which we are to eliminate.
Each transaction within the Ethereum protocol requires payment which doesn’t fit NAU business model based on multiple microtransactions. Besides that, we don’t want to have our blockchain module stuck each time Ethereum blockchain is under heavy pressure during popular ICO or something.