Social Media 10 reasons PR pros should love (and use) LinkedIn The business-focused social media site has become a robust platform for talent, content, advertising, and a lot more. By Toby WalshJan. 26, 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.