The Giving Pledge,” formed in 2009 by billionaire founders Bill Gates and Warren Buffett, is a campaign to encourage the world’s wealthiest people to give away most of their cash to help others. Buffett himself is taking the lead and plans to donate 99 percent of his wealth by the time he dies. This is an incredibly generous act! But it’s interesting to note that his present worth is $72.3 billion, meaning that if he gives away 99 percent of his wealth, he’ll still have $700 million remaining.