zlacker

Given that gift cards and virtual currencies are obvious and common approaches, could banks or payment processors not somehow put up big restrictions on cards being used for sudden large purchases on products like this?

>>seanwi+(OP)
At the end of the day, there's a lot more legitimate transactions than fraudulent ones. It's very difficult to restrict a particular type of purchase en masse without having a huge false positive rate. That's exactly why companies like Stripe work so hard on developing signals to feed into their fraud models.