Be careful what you write whilst on-line in China.  Yahoo was accused last week of helping Chinese authorities identify and imprison a reporter who described government fears about pro-democracy activists.  Shi Tao of China's Contemporary Business News attended a meeting at which an official read a government memo warning of possible social unrest during the 15th anniversary of the 1989 Tiananmen Square massacre.  Using an Internet alias, Shi described the government memo in an email sent to a U.S.-based pro-democracy website, incurring the anger of Chinese authorities.

According to Reporters Without Borders, Yahoo's Chinese division helped local authorities crack Shi's alias, leading to his arrest, two-hour trial, and 10-year prison sentence.  Google, Yahoo, and Microsoft are all competing for a share of the Chinese internet market and all three come under criticism for lowering ethical standards when it comes to free speech.  In June, Microsoft fended off criticism for blocking Chinese bloggers on its sites from using words like “liberty,” “capitalism,” and “human rights.”