…promoting two days of free Howard Stern. But it turns out that most of Sirius Satellite Radio’s free online, ending today. You’ve one more day to listen to all the Sirius music channels and most of the Sirius talk channels.

These include “Playboy Radio” (sex talk shows hosted by adult-video starlets who, counter to stereotype, are indeed capable of speaking in complete sentences), and “Sirius Left,” the liberal-talk channel Sirius assembled after Air America signed an exclusive contract with rival satellite-radio giant XM.

Sirius Left mainly comprises existing syndicated broadcast shows. These include the shows of Thom Hartmann and Stephanie Miller, both also heard locally on KPTK-AM 1090.)

It’s good that progressive talk has grown beyond one company into a growing, competitive genre, with legs to stand on and a clear future no matter what happens to Air America on the business side.

What satellite services can’t provide is local content. KPTK isn’t providing local content at this point either, but let’s hope they will soon.