Sheryl Sandberg is an American billionaire, social media executive, and author. As the COO at the helm of Facebook, she juggles the tasks of monetizing the world’s largest social networking site while keeping its users happy and engaged. Her experience ruling the complex and socially sensitive world of international economics has proven useful as she and Facebook founder Mark Zuckerberg work to strike a balance between helping Facebook users control privacy while finding ways to monetize its most valuable asset: data.