Mary Meeker Predicts $50 Billion Online Ad Boom; Says Facebook Is ‘Undermonetized’ November 16, 2010 No Comments on Mary Meeker Predicts $50 Billion Online Ad Boom; Says Facebook Is ‘Undermonetized’ Post View 1 Mary Meeker, one of Morgan Stanley's top analysts made an exciting prediction for online advertisers when she asserted that there would be a $50 billion…