I'm on there though so far I haven't gotten any sales.
Basically guys contact you regarding non nude foot fetish customs of various sorts and after you make it the content is then paid for by the customer though it is blocked behind a paywall until payment is received. This makes me very nervous as I never do customs before payment but the owner says that to date no one has refused to pay. We'll see :/.
It is very easy to register and set up your account (it took me like 5 minutes) assuming you already have a BM account of course. There is a thread on it in Other Work I believe on Stripperweb.