I think my first encounter with them years ago was as a buyer, but I saw I could sell my writing and promotional services in a number of ways, so I jumped on it. It make take a week or so to prime the pump (so to speak), but it's worth it once you decide you're willing to put in the effort. But unlike earning on Medium, you're not on your own, because you have clients to cater to. You seem like you'd have no problem at all with that part of it Tom :-)