PayPal is offering customers a virtual credit card. PayPal says it can be used on any Web site that accepts MasterCard.
Here's why PayPal says you could use this system: "By generating a new virtual card number to use in place of your debit or credit card number, PayPal Virtual Debit Card helps protect your financial information every time you shop. It also saves you time by automatically filling in shipping (and) billing forms at checkout, protects you from fake eBay and PayPal Web sites, and offers zero liability on unauthorized purchases made from your account. "
There's no added fee to use this virtual MasterCard.