Social Media PR in 15 seconds Industry professional Christopher Penn demonstrates the power of brevity using Instagram’s newest video feature to briefly explain public relations. By Kevin Allen@kevin_j_allenJune 28, 2013 SHARE Ragan Insider Premium Content Christopher S. Penn of Shift Communication is one of them. His video “PR in 15 Seconds” is one of my new favorites, quickly explaining the difference between owned, earned and paid media. Give it a look: To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.