This document provides a summary of key trends and events in social media from 2012 to 2013. It identifies four major trends that emerged during this period: constrained media due to limitations of platforms, transience of content, simplification of user experiences, and need for responsiveness. The document then reviews many notable events that occurred on platforms like Facebook, Twitter, YouTube, and more over each month in 2012-2013 to illustrate examples of these trends in action and how social media evolved during that time period.