Use Virtual Credit Cards to Control How Companies Use and Store Your Credit Card
A virtual credit card is a short term working credit card that has restrictions such as payout amounts, time of use, or merchants who are allowed to debit it. Using these, if the company you're buying from data-rapes you for your card number, it won't matter because the number they have is worthless after the set period of time or number of transactions etc.
(H/T to Lifehacker.com for the link)











