Rex Hammock knocks “the business of podcasting. Not the essence of podcasting” in a response to Darren Barefoot. I agree with Mr. Hammock about the content of podcasts:

The “killer-app” content will be that which has no professional alternative: A report from a Mom to her two children away in college; a recording of a Sunday School class for six people who couldn’t attend; an inspirationial chat from the regional sales manager to 15 sales people to listen to while driving between calls; an explanation of a new product by the lead engineer; a father’s play-by-play description of a Little League baseball game — all showing up automagically on the iPod or other MP3 player of the individuals who “subscribe” to it.