Trying Radio Userland

I was motivated to try Radio UserLand by Jon Udell's article on "Instant Outlining" on the O'Reilly network site. 

I've been interested in Jon's vision of collaborative technologies for some time.  I bought two copies of Jon's book Practical Internet Groupware; one of them went missing at work, and I liked the ideas so much that I bought it again.  But as with many of these things, Jon's approach required too much buy in to specific technologies.  Jon has acknowledged this himself in his article.