Social Media How GM fine-tuned its approach to social media The world’s largest automaker has streamlined how it responds to mentions on Facebook, Twitter, and blogs, and it has expanded its outreach at events such as SXSW. By Matt WilsonMarch 21, 2012 SHARE 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.