Day 2 started at 9am with the early attendees 'refactoring' the talks to fit into the schedule, this involved spreading the most voted talks into larger rooms, combining talks around similar topics, and at the same time making sure that no facilitator ended up with multiple sessions running on the same time period. There were about 30 proposed talks with 20 time slots, 4 sessions running in parallel per time period.
I attended CITCON A/NZ 2010 in Wellington, New Zealand. CITCON is an unconference on Continuous Integration and Testing, it uses an open space format (which worked really really well), and CITCON rocked! (more about this later)