Facebook's COO Sheryl Sandberg delivers the Class Day address at Harvard University in Cambridge, Massachusetts May 28, 2014, one day ahead of Commencement Exercises at the university. REUTERS/Brian ... more 
Facebook's COO Sheryl Sandberg delivers the Class Day address at Harvard University in Cambridge, Massachusetts May 28, 2014, one day ahead of Commencement Exercises at the university. REUTERS/Brian Snyder (UNITED STATES - Tags: EDUCATION BUSINESS) less 
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Reuters | Photo By BRIAN SNYDER / REUTERS
Wed, May 28, 2014 5:56 PM EDT