Spencer Rascoff, co-founder and chief executive officer at Zillow.com, speaks during a Bloomberg West Television interview in San Francisco, California, U.S., on Thursday, Feb. 14, 2013. Zillow Inc., operator of the largest real estate information website, jumped the most in eight months after reporting stronger-than-estimated fourth-quarter results as the U.S. housing market recovers. Photographer: David Paul Morris/Bloomberg via Getty Images