China's online space is the world's most controlled, with 52 people jailed last year for internet-related offenses, <a href="http://in.news.yahoo.com/070202/43/6bqu0.html" style="color:#FF0000;text-decoration:underline">Reporters Without Borders</a> said Friday. "China unquestionably continues to be the world's most advanced country in Internet filtering," the Paris-based press freedom group said in its annual media freedom report. The Chinese government polices the internet with high-tech filtering tools and the cooperation of internet service providers and technology firms. The mainland has an estimated 17 million bloggers and 137 million people online. Its online population is expected to surpass the US in two years, the <a href="http://www.post-trib.com/lifestyles/238438,China.article" style="color:#FF0000;text-decoration:underline">AP</a> reported.