I believe the era of traditional talk radio, with expensive headquarters and expensive talk show hosts is obsolete. The question is: What should replace it?
If I were starting a radio station, I'd crowdsource my programming: Each day, I'd search the podcasting world and broadcast and podcast the very best shows I could find. It would seem that such curated crowdsourced radio would offer fresher, better content, far less expensively than any one station's set of talk show hosts could provide.
Of course, changing programs every day will lose listeners who tune-in specifically because they like a specific show or host. But net, I think it would improve radio and allow it to survive in a world of too many new outlets for interactivity, for example, online forums, Amazon and Yelp reviews, and, of course, Facebook.
What do you think?