Lots of good tidbits here, primarily swirling around this idea:
Your station needs to produce podcasts. What the Hell are you waiting for?
Usage is growing. Despite, I might add, being handicapped by a horrible label ('podcasting' - as I noted two years ago, much to the consternation of critics at the time).
As Tom notes, those who make podcasts are increasingly using different terminology instead (surprise, surprise) - even the so-called 'podfather' himself.
And speaking of podcasting, here's an introduction in plain english for those of you who remain uninitiated:
[thanks to Michael Geoghegan for the link]
(Via Hear 2.0.)