a ) I am pretty sure you can't talk, trade or put anything in AH on guest accounts. Too many "gold farmers" abused them, so Blizzard took action.
b ) I think that the credit card might be checked for a proper credir card number, but that's all, if you are not actually billing it. It won't check address, name, etc. Of course, it might be different now, see above. =P
b ) I think that the credit card might be checked for a proper credir card number, but that's all, if you are not actually billing it. It won't check address, name, etc. Of course, it might be different now, see above. =P