Social Media The 5 most popular stories on PR Daily this week You always hear it’s not what you know, but who you know. Judging from this week’s top stories, we’d say the ‘what’ is just as important, at least on social media. By PR Daily StaffMay 5, 2014 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.