The reason this time is concerns over pornography. Of course, search engines don't host pornography on their sites, they simply provide links to searchers. If China feels it has a pornography problem, the origination of that problem begins with the searcher, not the engine.
Web sites and search engines that ignore their new found regulations will face penalties and possible closure.
Chinese Internet Portal Sina Buys Focus Media for $1 Billion
Baidu Responds to Accusations of Questionable Practices
Baidu Launches C2C Site, Youa.com
China's Sohu.com Posts 600% Jump in Profit
1.8 Billion Internet Users by 2012, China to Overtake US Internet Use by 2011
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