Poll: Fear drives managers to ban social media at work A recent poll shows managers, not IT, are the primary reason social media sites are blocked at work. Driving that decision: fear. By Michael SebastianJan. 14, 2008 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.