Just Use Single Transaction Virtual Credit Card Numbers
Many credit cards now allow you to create a virtual credit card number which is limited to a specific number of charges, a specific amount of $ and/or a specific amount of time. Then they can't charge more than you specify or after a date you specify. Just because you give them a credit card number doesn't mean they now can use it any time they want for any amount they want.
Biting the hand that feeds IT
