Geoff, your observation about radio and the advent of television is very interesting, and actually applies to practically every media revolution in human history. For instance, when Gutenberg invented the Western version of moveable type and proceeded to use the technology to mimic earlier media, his invention was not immediately appreciated in certain circles. A German abbot claimed printed versions of Bibles and religious tracts would never replace the market for hand-drawn manuscripts on vellum. The abbot, of course, was eventually proved wrong. As for the future of podcasting, we seem to be in a similar stage of development, where programming closely follows old models while people struggle to accept the new technology. However, I agree with you -- someone will no doubt work out the technical, business, and usability issues that I identified, and perhaps even help podcasting or its descendants achieve mainstream success. But as it stands right now, podcasting is not ready for prime time.