We have to ask ourselves if we have become so focused on supporting personal choices that we're failing to encourage women to aspire to leadership.

Pages on Facebook are allowed to be anonymous. That is really important. People start revolutions; we need anonymity.

Go to a playground: Little girls get called 'bossy' all the time, a word that's almost never used for boys. And that leads directly to the problems women face in the workforce. When a man does a good job, everyone says, 'That's great.' When a woman does that same thing, she'll get feedback that says things like, 'Your results are good, but your peers just don't like you as much' or 'maybe you were a little aggressive.'

Men feel like they can be a professional and a father. For women it's "or." That's offensive to me. The concept that it's not possible is crazy.

I go around the room and ask people, 'What do you think?'

I'd worked on leprosy and malaria in India [at the World Bank] and asked myself the question: Why do we let 2 million children die every year around the world for not having clean water? Because they're faceless and nameless. So, for me, Facebook looked like it was going to solve the problem of the invisible victim.

We have a problem with women in leadership across the board. This leadership gap - this problem of not enough women in leadership - is running really deep and it's in every industry. My answer is we have to understand the stereotype assumptions that hold women back.