The Giving Pledge, started by Warren Buffet and Bill and Melinda Gates, is an effort to invite the wealthiest individuals and families in America to commit to giving the majority of their wealth to the philanthropic causes and charitable organizations of their choice either during their lifetime or after their death.
Each person who chooses to pledge will make this statement publicly, along with a letter explaining their decision to pledge. At an annual event, those who take the pledge will come together to share ideas and learn from each other.