they can't use your credit card info.. just use your brains ffs... if they will use your credit card go and sue them, you will get few millions of $... so yea, there are milions of ppl buying from blizzard via credit card and u are scared that they will use your credit card to pay rent or what? dude, they make like 100M each month... I highly doubt that they will use your credit card and risk the sue of 5M... anyway u can choose to save your credit card information only if u are attaching it to b.net balance or WoW sub, even after that it's hashed in some DB