Podcasting “promises a future where anyone can make radio, instead of just listen to it. The biggest podcast audiences now number in the mere tens of thousands. Yet real radio, the kind with bona fide mass audiences, is starting to use the technology to make its shows available for download. Several US public radio stations, as well as the Canadian Broadcasting Corporation and the BBC, are experimenting with the medium. … Given that podcasting didn’t exist nine months ago, this adoption curve is impressive. Podcasting – unregulated, low-cost, on-demand radio – is heading for a tipping point.”