"But if you accept the U.S. Postal Money Order, take it to the post office to negotiate. There have been recent forged U.S. Postal Money Orders showing up. Your bank or credit union might accept the Order for deposit but you will have little recourse if the Order turns out to be bad."

I guess I must be a stick in the mud.... It never occured to me to attempt to cash it anywhere except at the Post Office... LOL
One nice thing about the Ebay system... one should be able to make sure they get the legit payment before shipping... I have read about problems with other types of Bank paper...