Social Media 7 scientific insights for creating better Facebook content Stanford/Wharton research shows that photos and videos draw engagement, and links mostly go without comments and ‘likes.’ By Raf Weverbergh, Kristien VermoesenDec. 11, 2013 SHARE Ragan Insider Premium Content 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.