Social Media The 5 most popular stories on PR Daily this week This week readers learned about social media marketing trends and principles to guide their PR efforts, alternatives to ‘cool’ and more. By PR Daily StaffMarch 21, 2016 SHARE Ragan Insider Premium Content RELATED: Eradicate PR, marketing and social silos with content marketing that boosts ROI. 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.