COO, Facebook
Sheryl Sandberg's year was dominated by speculation around, and then the lead-up to, Facebook's high-profile and subsequent controversial IPO launch on the NASDAQ in May.

COO since 2008, Sandberg crossed the divide from Google to become the communications power behind Mark Zuckerberg's throne, the person who has kept the social networking behemoth's wheels on the road in a male-dominated environment while Zuckerberg concentrates on product development and innovation.

A passionate advocate for women in business and the need ...