Some new figures released by the Radio Advertising Bureau suggest that radio is now facing problems. At both the local and national levels, radio revenue has dropped over the past year. Off-air revenue growth, meaning advertising that comes with podcasts and digital downloads, has surpassed the RAB’s expectations. It is expected to reach $2 billion by the end of 2008, almost a full year ahead of the RAB’s projected timeline.

I don’t know if these trends will result in radio people calling podcasters maggots or claiming them to be trapped within a basement in Terre Haute. But the upshot is that podcasting isn’t going away anytime soon.