Another reason why an unconference like a BarCamp is a good value for its participants:
"We figured there was much more expertise in the audience than there possibly could be onstage," says BarCamp co-founder Ryan King. Unconferences break the barrier between the two. Attendees write topics they're interested in on boards, consolidate the topics, and then break into discussion groups.
At traditional conferences, the most productive moments often occur in the corridor between meetings; at unconferences, attendees like to say, it's all corridor.
"Why 'unconferences' are fun conferences" by Kathleen Craig (Business 2.0 Magazine via CNNMoney.com)