Steve Case, America Online Co-Founder
In 1997, Case and his wife, Jean, created the Case Foundation, which promotes "citizen-centered philanthropy" with projects such as America's Giving Challenge, an online competition for people to become involved in charitable work. In addition to serving as chairman of the foundation, Case is chairman of a nonprofit dedicated to funding brain cancer research and served as the vice chair of the Committee to Encourage Corporate Philanthropy.
The Cases are among the billionaires who have signed the Giving Pledge, committing to give the majority of their wealth to philanthropic causes. "We share the view that those to whom much is given, much is expected. We realize we have been given a unique platform and opportunity, and we are committed to doing the best we can with it," the couple wrote in their pledge letter.