Self-organizing Conferences

The author of "Thinking in C++", Bruce Eckel, writes about a conference methodology for self-organizing conferences.
What's the best thing that happened at the last conference you attended? It's very likely that you'll remember one or more "hallway conversations," or perhaps a "Birds-Of-A-Feather" session. An OpenSpace conference creates that experience for the entire conference, by ensuring that you are always having the most interesting conversation possible. The emphasis is on discussion, instead of listening to eyes-forward presentations.
Bruce Eckel