It happens to be optimized for delivery over wireless networks, but you could deliver it over terrestrial networks as well. That's very different from the way video is encoded today, where you have to code separately for 14.4, 28.8 and on up to super broadband speeds. When consumers go to a video site today they have to click on their connection speed. It's kind of crazy to expect people to know what their connection speed is. PacketVideo removes the need to do that.
Data storage is an issue for PDAs today.
Even with miniaturization, storage takes up space. People worry about losing their PDAs and the data they contain. Well, the right thing to do is leave all that data on a server. You don't need to carry the data, just access to the data. Blue Tooth is a wireless protocol for devices to talk to each other in a localized area without plugs.