South African mining magnate Patrice Motsepe announced earlier this year that his family was the first outside the United States to sign the pledge, promising to give away half the money generated by their assets to the country's poor.Though the rest of Africa's billionaires may not have joined the Giving Pledge, they have been giving to various causes close to their heart.

http://mg.co.za/article/2013-04-26-00-the-rise-of-african-philanthropy