radio

http://jstrande.typepad.com/blog/2004/11/the_future_of_r.html

http://www.masternewmedia.org/radio/podcasting_trends/how_podcasting_will_influence_the_future_of_radio_20051103.htm

http://www.masternewmedia.org/news/2004/10/13/what_is_podcasting_chris_pirillo.htm

http://seekingalpha.com/article/140094-the-uncertain-future-of-radio