Billing companies scrub to keep their clients (and themselves) below 1% chargeback. Their scrubbing evolves from a day to another when they decide to band a bank or a whole country. I think they change it also when their client get too close to the 1% chargeback during a month.
But this is only one factor among a dozen other ones that makes the number of join change from one day to another. And the less join you make, the more difficult it is to see the picture.
Also, billing companies don't make money out of scrubing. When they scrub, the customer is not billed and he's not granted access to the members area.
My
