Be Social During the Event. Your smartphone is your best friend during an event. Take pictures, tweet quotes, live stream impromptu interviews between sessions, and interact with your attendees who will all be doing the same. Encourage attendees to be social at the event by providing Twitter and Instagram handles for all vendors and speakers on a cheat sheet or in your event app. Follow your hashtag and like, retweet, or share user-generated content to increase buzz. Attendees will keep posting if they get a lot of engagement on their posts.