Originally Posted by gpburdell
Suggestion: Use a credit card that allows generating a single-use credit card number with the charge limit you specify. Then you're doubly protected; the vendor you give it to can't charge more than the limit you set and the cc number will be denied if it's used again somewhere else. If you return the item, the company that made the charge can issue a refund to the number, but otherwise the number is one-and-done.
I just use an amex and don't worry about it. They back their customers 99% of the time. and I am not liable for any fraud chargers. Visa on the other hand I've heard a few people screwed over by them. Though I just started a dispute with visa so I am not sure how they will stand. But doesn't look good so far to be honest.