Giving Pledge initiative last year. The initiative, launched by Warren Buffet and Bill and Melinda Gates, promotes philanthropy by encouraging the world’s richest people to dedicate a majority of their wealth to charitable causes, either during their lifetimes or in their wills.On Tuesday, Scott, whose net worth is estimated at around $60 billion, according to the Bloomberg Billionaire’s Index, penned a post on Medium announcing the organizations she donated money to as part of the pledge and explaining why she selected those nonprofits.“Last year I pledged to give the majority of my wealth back to the society that helped generate it, to do it thoughtfully, to get started soon, and to keep at it until the safe is empty,” Scott wrote in the.