I know it isn't unusual for stamps to make it through the U.S. postal system without receiving cancellations but I would have thought that, of all places, the Contract Postal Unit at the American Philatelic Center would get it right.
I received the November 2010 issue of American Philatelist in today's mail and had to laugh when I saw the envelope.

I guess I should be thankful that the marker monkey didn't have his way with it.
