Apps run in the browser. Designed to be extended by developers, Radio will also appeal to the masses with its news aggregator and weblog features. Keeping up with the news and creating your own weblog is easy with this software. There's a lot of functionality inside this program, including Dave's passion, a Web outliner. Ultimately, Dave wants to make it easy for anyone to write the Web.
Radio is a personal Web application server.
It comes with a nice app that gets news via RSS and publishes a blog and RSS channels as output. But the app is just there as a bootstrap, to give developers ideas, and to give users a way to get started. To interest the developers, there have to be users. Content management is a basic building block. I'd like to say that we all got together for Thai food and dreamed it up and knew what it would look like and how it would work five years ago, but that would not be true.