Quote from BuddyI think it skips entering payment info once you make one succesful purchase (atleast for me). Register a fresh account and try to gift something to your own account, then you will know if its account or cc issue or whatever.
It still goes to a confirmation page (where you can also shoose to edit the payment information) and not the steam store.
Quote from Jenn0_BingI've had no warning of begin banned from making purchases (is that even possible?!)
I once had such email but it was phishing spam.