Imagine this scenario: You sign up for Clickbank and make a few sales. A week or two goes by and you get a paycheck from all those sales. But then, one of the customers gets a refund. You're a few dollars in the hole now, aren't you? I know they just withhold it from your next sale, but what if you never make another sale? Do they just accept the loss, or do they send you a bill? I'm just curious as to what exactly happens in this situation.