I found this absolutely fascinating. The idea that anyone can add, or edit the content in a wiki has some appeal. Being a person who likes to maintain control in things being correct, I would hope to submit what I knew to be true, and of value to others. I guess we would all have to be aware of getting our opinions in there, and slanting a view. That is the thing I would worry about the most, information not being accurate. I can see value in using a wiki for a conference. Much information could be dispersed and maintained to benefit all participating.
I liked the Princeton Public Library wiki.