USPS Priortity mail boxes reusable?

According to this, it's illegal

http://consumerist.com/2008/05/dont-reuse-that-usps-priority-box-its-illegal.html

http://www.thedenverchannel.com/news/16072154/detail.html

I have taken them apart, turned them inside out

Recently I tried to look for a box to "turn inside out", and THEY ARE MARKED ON THE INSIDE OF THE BOX!!!!

(How's that for being "green?"

It cost us more money for the post office to have the boxes printed on the inside. They had no choice since some were inverting the box and using it at other shippers.
Some say we will loose our post office eventually. I think we will regret it later too. Like the old saying "You don't know what you've got 'till it's gone".