"The Gates Foundation , the world’s largest, richest philanthropic organisation founded by Bill and Melinda Gates in 2000, and doubled in size by Warren Bufflett in 2006, is “dedicated to bringing innovations in health and learning to the global community”  in order to enhance healthcare and reduce extreme poverty. It is indeed famous for giving hundreds of millions to good causes.
But an investigative report published in the LA Times at the beginning of 2007 found that the Gates Foundation “reaps vast financial gains every year from investments that contravene its good works” . These investments go to companies responsible for causing the problems the Foundation tries to solve."
I blogged on this topic this earlier, but a reminder is always useful, especially when we are trying to raise funds from the Gates foundation. This article is very fully referenced.