[This is basically a personal perspective/ rant about Rein.
Short version: I LIKE IT]
My first experience with Rein was in mid to late October 2016. I was starting out into freelancing, and was looking for an alternative to Upwork. Given their exorbitant fees, absolute disaster of customer support, and the now well known race to the bottom economy.
I found Rein by searching for freelance markets that would operate on Bitcoin. Amongst others also found Taskhive, And several smaller markets both on the onion network, and In the open Internet.