I’ve given three workshops on consumer-generated media (CGM) to CMOs and senior marketing execs of three Fortune 500 companies in the past week, and in each case I learned that the corporate IT department was prohibiting employees from accessing a range of social media, including video sharing sites and blogs. I think this is a highly misguided practice and will lengthen the pain these companies go through as they adjust to a more consumer-empowered world. These companies are sending two disturbing messages (whether intentional or not): first, employees must be sensored; and second, conversations and content on these robust, emerging platforms are irrelevant. Yikes. I wonder how prevalent this practice really is.