OpenSpace is a simple methodology for self-organizing conference tracks. It relies on participation by people who have a passion for the topics to be discussed. There is no preplanned list of topics, only time slots and a space in the main meeting room where interested participants propose topics and pick time slots.
Last saturday was the second Agile Open Space in Montevideo organized by the agile community of Uruguay (the first was in 2013).
We do not have the exact number of sessions, but there were 4 slots of times and 5 rooms, so you can do the maths.
As usual, we present the virtual coverage of the event.