i work for a large credit card and this DOES happen, it has been going on for over a year and usually they catch the charges and make an outbound call to you if it is suspicious. many merchants "test" cards its nothing new. it posts as an "authorization" and is removed after a period of time. if you didnt call you would never know it was there. no need to blow up your credit card companies and freak out, just pay attention to your online accounts and statements. call if you see anything you don't recognize from these, report them and you'll be fine
