You probably knew that Google was the No. 1 search engine, but did you realize that YouTube.com was No. 2? If you’re interested in people knowing more about the events you organize, there’s no better way to spread the word than creating video content. Or, better yet, encouraging potential attendees to create content for you. The easiest way to do this is to hold a video-based contest where the winners get free admission or other perks. Ask contestants to upload videos to YouTube, insert your conference hashtag as a “keyword” and to send you the link after it’s posted. Then you can add those videos to a playlist on your YouTube channel and send people there to vote on their favorites.