From the article Groupon stumbles in China in The Wall Street Journal:
Foreign Internet companies have long struggled in China, which has more Internet users than any other country. Yahoo Inc., one of the earliest to enter, handed over its China business in 2005 to Alibaba Group Holding Ltd., and has since quarreled with the Chinese company. EBay Inc. sharply scaled back its presence in China after losing market share to an online shopping site owned by Alibaba. Google Inc. has seen its market share slide, to the benefit of rival Baidu Inc. since the U.S. company moved its Chinese-language search engine to Hong Kong out of frustration over censorship and hacking issues.
Those who cannot remember the past are condemned to repeat it.*
