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Photo: Rick Wion, director of social media at McDonald’s Corp., says the chain’s nearly 12 million Facebook fans “want entertainment.” Credit: Erik Unger
[NOTE: This list combines data from Dachis Group’s Social Business Index and Crain’s 2011 lists of Chicago’s largest public and privately held companies. The Social Business Index is seeded with the Global 2000, the world’s most valuable brands, and the largest companies by advertising spending. Subsidiaries of companies are measured under the parent company.]