When Bill and Melinda Gates along with Warren Buffett decided to take the philanthropy road, they had plans to add many to follow suite. And now, they have the backing of 17 more U.S. billionaires, which includes Facebook co-founders Mark Zuckerberg and Dustin Moskovitz, to have pledge half- their fortunes to a noble cause. The Giving Pledge drive now has 57 billionaires on board from its initial launch in June. Zuckerberg, gave away $100 million earlier this year to public schools of Newark, New Jersey. The team of the Gates’ and Buffett has also tried to woo their Chinese counter parts but will little luck.