In April, Umair Haque posted a manifesto on his blog on the Harvard Business Publishing web site where he called for today's investors and start-ups to start building applications to "change the world" instead of just making apps that make money. He challenged Silicon Valley to find a problem to fix that will change the world for the better and then pledged that he would help by providing free consulting. Recently, he revisited this topic which he was due to speak on at this year's Supernova conference.