USPS has come up with a long list of changes in its services and pricing. It has also trademarked the term Post Office (TM). Most curious is the change in cost of a Post Office (TM) Box -- the rentable metal mail cabinet that carries the POB number. Read this:

"Prices have been adjusted up or down to reflect the commercial real estate value of each location."

Next we'll likely have the cost of a First Class Mail (TM) stamp based on the zip codes of the sending and receiving Post Offices (TM).