Zillow delivered better-than-expected results and the housing market is improving.Shares of Zillow Group (Z 18.27%) (ZG 18.22%), the leading online real estate platform, were surging today after the company delivered solid growth in spite of broader weakness in the housing market.As a result, the stock closed up 18.3%. Zillow bounces backZillow, which makes money through advertising and related services for realtors, said that revenue in the quarter rose 13% to $572 million, easily beating the company's own ...