An Important question relates to how social media sites are adding value to the economy. Marketers at companies like Ford and Zappos, for instance, are using social media to promote products and build consumer relationships. Many corporations are supporting Facebook pages and Yammer accounts for employees to communicate across departments and divisions. Professionals like doctors, professors, and engineers also share ideas on a regular basis. Even staffing organizations use social media, bypassing the traditional e-mail and telephone channels. While billions of dollars in investments are being funneled into social media, it may be too early to assess the exact economic contribution of social media to the entire economy.