Good catch, Terp. Knowing the Post they probably hid it in the bottom left corner of page 8 in 1/2 point font size.
I remember working for a radio station in high school that was excited to APPEAR on the Arbitron rating system, so I can relate to just how small a listenership a station has to have to not show up on the Arbitrons.
It was a light rock station in Prescott, Arizona, that could not be heard outside a 25 mile radius even during the best weather conditions. We showed up on the Phoenix Arbitron list, and the powers-that-be actually thought the person who filled us in must have gotten the call letters wrong.
This is the way Air America ends; not with a bang but with a whimper.