The document provides an overview of several social media projects conducted by the European Society of Radiology (ESR) and for radiology conferences, including: 1. Live streaming and a social media wall combining tweets, posts, and comments for an international radiology congress in 2013. 2. An photo competition where people could submit photos via social media or email to win prizes. 3. An onsite game at a 2013 congress where participants could win prizes by finding pins and clues on social media. 4. A video responding to criticism on Twitter about how to improve future conferences.