In this March 28, 2012 photo, Chinese performers hold up cards showing the various apps available for online users for shopping and other services at the launch of a mobile phone in Beijing, China. Alibaba, the e-commerce giant planning a blockbuster share sale in the U.S., shook up China's vast but sleepy retailing industry by popularizing online shopping a decade ago. Now it and China's other Internet giants are mounting challenges in areas from banking to broadcasting as smartphones bring even more people online. (AP Photo/Ng Han Guan)
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