SAN FRANCISCO - Google Inc. is refusing to speak with reporters at CNET's online news site after it ran a story that used Google's chief executive to illustrate how easily the company's search engine finds personal information. ADVERTISEMENT Google told News.com, the online tech news service of CNET Networks Inc., last week that it would not speak to any of its reporters for a year, according to News.com's editor. Google was angered by a story last month that focused on potential threats the search engine leader's product poses to personal privacy, said Jai Singh, the News.com editor-in-chief. To demonstrate the...