Sounds like offers that should be paying $XX dollars, are only paying out $YY dollars...because the merchant believes some of the leads are valid?
Is that shaving? Reducing the payout expected/owed to a merchant?
If that's the case, then I'm assuming "scrubbing" means to get rid of affiliates whose traffic is consistently not converting?
Scrub them out?
Maybe I'm out to lunch, can anyone clarify?