That's a great question. Up to this point we've really assumed that most people come to the table with a team or potential teammates already in mind. One thing we could certainly do better in the future is providing mechanisms through which teams can find collaborators (they don't need to be in their area though, of course, since the competition is completely virtual).

If you check the discussion list and do some Twitter searches you'll find that many teams advertised that they were looking for collaborators that way. Still, probably not the best mechanism for that.