Listen, there is a new problem with CC's, esp. if you use them online and "store" the info on the website of the company you buy from frequently.
Hackers can get in and use your CC to buy something for themselves.
Never let a website "store" your CC info.
There was a big discussion about this on the ebay message boards a while back. Mr. A noticed a charge on his CC that he had stored at the WM website. Found out it went to Mr. B, who bought the item online (on ebay) from Mr.C.
Looked at Mr. C's auctions, they were all for new items from WM, all said, this item will be shipped to your address but will have someone else's name on the label (not your name). Called the triangulation scam, scammer ends up with the money and someone else is stuck with the stolen merchandise.