Few know more about conferences than Doc, who has attended more than one of them:
My Internet Identity Workshop pictures are up.
The event, an unconference, was one of the best conferences, prefix or no, that I've ever been to, much less been part of.
Kaliya (pictured above) Hamlin, who organized the event's “open space” approach, has these reflections. Kaliya and Phil did most of the hard work of putting the conf together. I'm listed as an “organizer”, but that's an extreme exaggeration.