Because I have an MBNA (now Bank of America) account, I can use https://www.mbnanetaccess.com/NASApp/NetAccess/ShopSafeRequestHandler where I can have temporary credit cards. There are two advantages to this: 1) If the temporary credit card number is stolen from the vendor's database, I'll be OK. 2) If my physical card is stolen, I'll still be OK. Just a thought.