Microsoft co-founder Bill Gates and billionaire investor Warren Buffett are launching a campaign to get other American billionaires to give at least half their wealth to charity.
The handful of billionaires approached so far have embraced the campaign. Four wealthy couples have already announced their pledges, including LA philanthropists Eli and Edythe Broad, Gerry and Marguerite Lenfest of Philadelphia, John and Ann Doerr of Menlo Park, and John and Tasha Mortgridge of San Jose.
Gates and Buffett are calling their campaign The Giving Pledge. Buffett, chairman and CEO of Berkshire Hathaway said that he couldn't be happier with his decision in 2006 to give 99 percent of his roughly $46 billion fortune to charity.
Gates and Buffett are asking each individual or couple who make a pledge to do so publicly, with a letter explaining their decision.