Your reply inspired me to make another donation to Mozilla.

EDIT: The donation page fooled me. After putting in a credit card, there is a step called 'personal.' It is not. It is the billing address for the card. I put in personal info and was rejected. I put in billing address and it went through. (Company card)

The rule for us little guys applies to big guys too: Re-inventing UI makes it harder for your customer, at least initially. Please don't do it unless there is a very good reason.