Variations of this scam have been going around for a while. they love to go after people buying/selling cars and renting or looking to rent a room. A famous one is they offer to buy your car from autotrader or cragslist and send a check for too much money telling you to money order the overage back to them. Buy the time your bank finds out the check is fake they are gone with the money order and you now owe the bank. If they ask for you to send a money order, run away, run far away.