Exactly. I've formulated a theory of micropayment success. It requires: 1. A credit card or payment method already in the system, OR, a trustworthy vendor; 2.

Exactly. I've formulated a theory of micropayment success. It requires: 1. A credit card or payment method already in the system, OR, a trustworthy vendor; 2. One click ordering or an Ajax style cart where you don't have to load a new webpage for every step of adding things to your cart and checking out. 3. Large product base spanning multiple product offerings but only one central payment center. Obviously, this theory was postulated by examining by the most successful micropayment vendor out there, Apple. They're really good at it. Think about it: you don't need to enter your credit card information twice;they have one click purchase; they have multiple product offerings, but all payment goes through them. There is only one person who needs to be trusted, them. I think the one person to trust thing is really the key point. People don't have time to evaluate online vendors for trustworthyness. But if they're already comfortable, it doesn't matter, and $.99 cents becomes no hassle at all to spend.