An employee mops the floor in a building lobby at the Alibaba Group Holding Ltd. headquarters in Hangzhou, China, on Tuesday, Oct. 13, 2015. Alibaba's bet on data technology is driving greater investment in areas including ways to protect user privacy as it battles Amazon.com Inc. for customers globally. Photographer: Qilai Shen/Bloomberg ORG XMIT: 585718101

Alibaba's e-commerce app finds success with social networking features

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An employee mops the floor in a building lobby at the Alibaba Group Holding Ltd. headquarters in Hangzhou, China, on Tuesday, Oct. 13, 2015. Alibaba's bet on data technology is driving greater investment in areas including ways to protect user privacy as it battles Amazon.com Inc. for customers globally. Photographer: Qilai Shen/Bloomberg ORG XMIT: 585718101
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