The New America Foundation is offering up a new report written by Kevin Werbach called "Radio Revolution: The Coming Age of Unlicensed Wireless": The 52-page report offers a great history of spectrum regulation in this country as well as a good overview of the different types of wireless technologies used to date.
But perhaps the most interesting parts describe a vision for the future where unlicensed spectrum and adaptive mobile phones rule the day. If a bunch of policy changes are made and technology continues to develop, Werbach describes a day when virtually anyone who wants to could have their own broadcast network. Then not only could anyone create content to broadcast to anyone, but people could use wireless devices to watch an instructional video to learn how to change a tire, for example, on the spot.
A lot of the applications he envisions could be available in the near future with higher-speed networks that are in the works, but the content on the planned networks (particularly 3G networks) may be limited and expensive. He sees a much more open world where the creation and access of content is available to almost anyone.