Originally Posted by
Gshumway
You should care. Identity thiefs also use that to check if card numbers are still valid. Often a larger charge(s) will follow later.
I was just about to say this.
Yes, you should care. The practice of charging small amount to a set of stolen credit card details is called "carding". If it passes this process, it will then be sold on to other interested parties who will then use it for a large charge (as said by
Gshumway)
/AE