51% of executives in many are worried that employees are wasting valuable company time on Twitter and / or Facebook, and 49% worry about how their companies and brands are being represented in the social media world, according to “Social Media: Embracing the Opportunities, Averting the Risks,” a white paper based on research conducted by Minneapolis-based Russell Herder and Ethos Business Law across 438 randomly selected management, marketing and human resources executives at US companies. But a greater percentage see opportunities, including 81% who agreed that it can enhance relationships with customers/clients and build brand reputation. More details at Marketing Pilgrim.