The move hints that China may be loosening its control of public access to the Internet and other forms of media. The country's tight grip on information access is legendary. It employs tens of thousands of censors to watch over the Internet and maintains strict limits on what can and cannot be published and viewed by its citizens -- with information that reflects poorly on the government at the top of its objectionable content list.
Some speculate that likely the site isn't completely unblocked, but it is encouraging to see any progress at all. Many other companies, including Google, Yahoo and Microsoft, all voluntarily filter certain contain for pages served in China per government requests. Those that don't comply can't do business there, and get simply filtered out.