I came across this article titled EVENTBRITE ISN’T JUST SELLING TICKETS, IT’S BUILDING A NEW KIND OF SOCIAL PLATFORM. I thought this was interesting because it speaks about how it events (a physical network) is brought to life through online apps. Though it caters for all events, ithe way it works may have some bearing on miXXerS especially as they opened up their API. They provide the option to keep in touch with others that attended similar events to you. You can read more here