Social Media The 5 most-popular stories on PR Daily this week From a writer’s cheat sheet to Instagram for PR, here are the most popular stories on PR Daily during (unofficially) the last week of summer. By PR Daily StaffAug. 31, 2012 SHARE 10 signs that desperately need to be proofread 50 ways to use Twitter more effectively 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.