The Poynter Institute's Jim Colgan seems worried that we'll be offended by his suggestion that "journalists should at least experiment with online audio – whether they work in radio or not." If so, he makes amends by comparing and contrasting SoundCloud, AudioBoo, and Broadcastr: "While SoundCloud has an element of social media, AudioBoo is all about being the Twitter for audio." He also talks to public radio executives about the power of audio journalism.