<t> I use virtual credit cards for all online and voice purchases. They are easy to use and can be set with specific limits and expirations. For example, If I purchase $100 worth of stuff from a online site I create a card for exactly $100 and a short expiration. Charge goes on my main card account ...

Any update?? As a new purchaser of WitPAE search would be invaluable given the vast amount of info in the forums...