"Folks sometimes forget that philanthropy is addressing the very problems that have defied market solutions or in some cases are the result of market failure," says Phil Buchanan, President of the Center for Effective Philanthropy. But sometimes that is overlooked or underestimated by the start-up world, according to Buchanan. "There's way too much ignorance about the sector," Buchanan tells us. "Particularly given what an important role it has played in this country, and the fact that our nonprofit sector, with all its flaws and all its faults, and all the ways it could be better, is the envy of the world."