Marketing The 5 most popular stories on PR Daily this week Brands’ use of social media, from creating ambassadors to solving problems to winning customers, were among the topics that interested PR Daily readers most this week. By PR Daily StaffJune 1, 2015 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.