What's+an+Unconference?

What's an Unconference? Wikipedia on [|Unconference] [|Unconference: Revolutionary Professional Development] (M.E. Steele-Pierce)  EdCamp - Unconferences for Educators  [|EdCamp] - media type="custom" key="23822284" [|I'm Ruining Professional Development. Want to Help?] Dan Callahan media type="custom" key="23822194"