Famed venture capitalist Mary Meeker is leaving Kleiner Perkins to start her own firm. Meeker is renowned in the tech world. She grew in prominence during her 19 years as an analyst at Morgan Stanley, and is one of Silicon Valley's top investors. But she reportedly disagreed with others at Kleiner Perkins over its investment strategy — as well as less material issues like where to hold the annual office Christmas party. Three of her colleagues are leaving with her.