Back when ePassporte was still and business (before Chris Mallick ran off with the money and used it to bankroll his Middle Men and Columbus Circle movie projects), a popular trick amongst adult pay-site owners was to lower the scrub and use fresh ePassporte virtual visa cards to get the chargeback ratio under control. They would fund those extra joins themselves and then recuperate the money on the other side.
Interestingly, Zombiao, a billing company, launched an ewallet service last year: RedPass. RedPass users can order a RedPass MasterCard and fund it using their RedPass wallet. On GFY and JBM a few users hinted at the possibility that Zombio could be planning to use RedPass cards in the same way the old ePassporte virtual visa trick was used to get chargeback ratios down. Given the stricter MasterCard regulations, I highly doubt this is the case or even possible.