Dave Winer asks What is an unconference? Great observation about conventional conferences:
This observation may turn out to be the Fundamental Law of Conventional Conferences.
The sum of the expertise of the people in the audience is greater than the sum of expertise of the people on stage.
And Stowe has a good follow-up post asking: Unconferences: But Aren’t There More Dimensions?
Sums it up pretty well in my view.