Sheryl Sandberg, chief operating officer of Facebook Inc., speaks during the annual meeting of the Clinton Global Initiative (CGI) in New York, U.S., on Tuesday, Sept. 24, 2013. CGI's 2013 theme, mobilizing for impact, explores ways that  members and organizations can be more effective in leveraging individuals, partner organizations, and key resources in their commitment efforts. Photographer: Jin Lee/Bloomberg via Getty Images