Apparently, Sportingbet Affiliates will close your account and confiscate all earnings below the payment threshold if you don't bring in 3 new depositors every month. I had no idea until I got the email from them, but it's in their T&C's. I've heard of affiliate programs reducing your rev share for failing to bring depositors over 3 or 6 months and then reinstating it once you bring them in, but I've never seen anything this extreme. The least they could do is pay out your earnings before closing the account. But I guess they are so cheap that 30 or 40 euros is a big deal for them. Potential affiliates, beware!