Five minutes to register for an event, show up on the big day, go to a few talks, drank a free beer (or two), and then head home. That is how it used be. In comes Facebook, Twitter, Instagram, Periscope, Meerkat, Snapchat and the like. Social media and technology has changed and is changing all of that. Event organisers and sponsors can now have nuanced and shifting interactions with attendees pre, during and post-event.