U.S. homeowners were less confident about the value of their homes in the second quarter, with one-third believing home prices had not yet reached a bottom, real estate website Zillow.com said on Thursday. ... Homeowners were more pessimistic about the short-term future of home values in their local market than they had been in the previous three quarters, according to the Zillow Second Quarter Homeowner Confidence Survey. http://www.cnbc.com/id/38653757