Great event, however would be perfect if more structured networking mechanism is implemented. In addition to color-code on name tag, I would suggest to set up a Google doc to allow attendees to freely sharing their project, what they are looking for (i.e. co-founder or developers) and contact info... before the event. This facilitates to find like-minded / same-interest people effectively, more productive meetup in person at the event. Without this pre-researched info, best luck to find "Sean Parker" in the people sea.