That audio "junk" is where the content lies. Who cares about seeing the talking head accompanying it? Also, I'd bet much of podcast listening is done while driving, so any video is superfluous. Plus, battery life is much longer for audio-only playback. One frustrating thing to me is that when I'm trying to listen to a video podcast, if I try to save my battery by turning off the iOS screen, it stops playback!
6/16/12 at 8:46pm