Mark Zuckerberg

How the Wealthy Use Their Charitable Foundations for GoodThe founder of Facebook has not yet donated as much as some of the others on the list, although the estimated $1.6 billion he’s given away is nothing to scoff at. Plus, Zuckerberg is much younger than most of the people on this list so he has a lot more time to still give his money away. And, he has already signed the Giving Pledge and plans to donate at least half his wealth during his lifetime.