Social Media The 5 most popular stories on PR Daily this week When Instagram took to Tumblr this week to publish a list of marketing pointers for brands, it likely didn’t consider if Jane Austen would approve, but our readers may have. By PR Daily StaffFeb. 24, 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.