You can generally manage your payment options through your account; that's how it works with Amazon
Thanks. I'll be going to the site today to do that.
Many (most?) sites, Apple included, delete your card number immediately after your transaction has been completed.
I don't think that's the case with iTunes or the App Store. I've had cases where I made a purchase, but there were insufficient funds remaining in the account, and the difference showed up as a small extra charge on my VISA. Maybe that also needs to be dealt with in the account.
I very much prefer to buy from sites that accept PayPal...
I'm with you on that one. PayPal is always my first choice.