Our purpose of using cryptocurrency within the product is for the transfer of funds, either to the user or the user purchasing online (online shopping/payment).  When we are distributing compensation to 10's of thousands of users in micro-payments on a daily basis it's difficult and expensive to use all current methods of payment transfer (bank wire, check, paypal, etc..).  Stellar was chosen due to it's speed, and cost - it is very fast (3-8 seconds), and very cheap (less than $0.001 per transfer).

Thanks for the question!  Let us know if you have any more