Hugh Pickens writes: "The Guardian reports that Facebook's Mark Zuckenberg is in China and has met with Robin Li, the head of Baidu, as he toured the facility of the biggest search engine in China. Zuckerberg has made no secret of his desire to expand in China, where Facebook has been blocked by the government censors' Great Firewall since 2008. On a recent global map of Facebook users, China appeared as a black spot, though it has a bigger internet population than any country on earth. "How can you connect the whole world if you leave out a billion people?" says Zuckenberg. China already has two Facebook imitators: Kaixin, with 80 million users, and Renren, with 150 million but these lack the economic clout and global reach of Zuckerberg's company although they do have the advantages of language and cultural awareness, as well as the protection of the Great Firewall. "If Facebook wanted to enter China, it would not have to change its function, because netizens here are used to copycats already, but it must, like other international internet companies, obey Chinese laws and regulations," said Hu Yong, a professor at Beijing University's School of Journalism and Communication."