Gates charity man happy to help billionaires give

U.S. billionaires pledging to give away at least half their wealth to charity can turn to the man in charge of Bill Gates' and Warren Buffett's philanthropy for advice -- but he doesn't want their donations. Since 2008 Jeff Raikes has been chief executive of the Bill and Melinda Gates Foundation, one of the world's largest charitable organizations with a $33 billion endowment funded by Microsoft(MSFT.O) founder Gates and investor Buffett. Raikes said the Gates and Buffett Giving Pledge campaign to urge America's rich to give away most of their fortunes during their lifetime or upon their death, which