Intranets AT&T to save $80 million in productivity due to internal social media profiles The telecommunications giant has built a robust social-business area on its intranet. Its officers got involved through what communicators dubbed reverse mentoring. By Matt WilsonDec. 19, 2011 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.