They probably mean they won't respond to scammers. Put an ad on Craigslist and you will have at least 50 people from over seas contact you wanting to send you a check for the asking price + a bunch extra to cover the cost of shipping. You are supposed to cash their check and then pay their "agent" cash when he picks up your car. A couple of days later the check will come back to your bank as a fake, and your out the money, your car + the amount you paid the "agent" to ship it.
