Causes, the startup that helps users leverage Facebook and other social sites to raise money for charity, has closed a $9 million Series C funding round led by NEA with participation from Founders Fund, Marc Benioff, Dustin Moskovitz, Ron Conway, Keith Rabois, and Karl Jacob. Scott Sandell of NEA will join as an observer on the Causes board. Causes CEO Joe Green says that the company will be using the money to build out its team, including some senior hires (the company is currently seventeen people).