I'm a fan of Cardpool. I've purchased two orders of iTunes cards already, and I've told a friend about it who's made a purchase. Glad you guys are becoming even more efficient. But, what's this technology? Can you say anything more about it?

Seems you can't guarantee that the person doesn't sell a card to cardpool and then go out and spend the money quickly. Unless you can maybe contact that company and request a re-issue with a different number? Or you just trust that the seller is honest and in the rare (?) case they screw you you don't do business with them and just eat the loss. Or something I'm not thinking of...