It actually decreases chargebacks from what I've seen, because most chargebacks (aside from stolen credit cards) come from significant others discovering the charges. The purchaser says "huh, no idea what that is", and the significant other saya "well call the credit card company and charge it back". Then the purchaser is forced to lie to their credit card company and say that they never authorized those purchases.
That's what digital cash money are good for. Unfortunately, there are no porn provider who would willingly accept an unknown cryptocurrency called bitcoin.
