The Diffusion Group (TDG) projects 60 million podcast users in the US within 5 years (http://www.tdgresearch.com/press044.htm). Will all of these people be using an iPod to download/transport their podcasts? Steve Jobs would like us all to think so, but I'll hazard a bet that the most ubiquitous mobile computing device on the planet - the mobile phone - will be the dominant platform for downloading and sharing podcasts. By 2010, annual shipments of mobile phones will be well over 1 Billion, the overwhelming majority of which will have gigabytes of memory, persistent broadband connectivity to the Web (and Bluetooth connectivity to each other), powerful processors, etc. In short, a perfect marriage between device and creative content.