From Forbes:
The three billionaire cofounders of online lodging website Airbnb, Brian Chesky, Joe Gebbia, andNathan Blecharczyk, as well as Salesforce.com founder Marc Benioff and 13 other individuals or families, have joined the Giving Pledge, the group announced Wednesday. Members promise to give a majority of their wealth to philanthropic causes.
Bill and Melinda Gates and Warren Buffett created the Giving Pledge in 2010 in an effort to spur charitable giving both in the U.S. and around the world. The Pledge now counts 154 members from 16 countries, the organization said in a statement.
“This new group joining the Giving Pledge is incredibly thoughtful about their desire to give back and help solve the world’s toughest challenges through philanthropy,” Bill Gates, co-chair of the Bill & Melinda Gates Foundation, said in a statement. “Some have been giving for decades and others are just starting out after building successful businesses, but they all see the value of giving in a bold and effective way. Melinda, Warren and I are glad to have the opportunity to learn with them and from them.”