Here's how Facebook CEO Mark Zuckerberg and wife Priscilla Chan spend their $74 billion fortune

AP Photo/Noah Berger Mark Zuckerberg, the 33-year-old founder and CEO of Facebook, has a net worth of $74 billion and counting. He's currently the fifth richest person in the world, according to Bloomberg's Billionaires Index, but it seems he doesn't have a taste for opulence. Especially when it comes to cars, clothes, and travel. As a member of the Giving Pledge and cofounder of the Chan Zuckerberg Initiative, the Harvard dropout has dedicated much of his current and future fortune to charitabl...