Postal Money Order versus Bank Money Order ???



Crazy question, but is there a difference between a US Postal Money Order and any other Money Order drafted from a US Bank account??? I notice some guys here very specifically note that they want a "US POSTAL MONEY ORDER ONLY!!". I thought all money orders were guaranteed funds??

R.
red2
I always ship bank money orders. My bank verifies that the money is as good as cash. I know that not everyone agrees with this.
I have also come across those Postal MO requests from larger scale sellers. My guess is that the specific requests for Postal is a counterfeit and reliability issue. Bank M.O.s are more anonymous and the Postal system isn't going anywhere. I really don't know, though.