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Or send your e-mails to unsv@qq.com Join us again next week for more news about science in Special English on the Voice of America.

VOA: special.2010.01.12

He also found time to pay a call on Tencent, the Shenzhen-based Internet company that boasts over 700 million users of its QQ social-media platforms.

FORBES: Chinese Leaders Knock On Internet Giants' Doors As Transition Unfolds

Some people have multiple microblog accounts: Tencent has its own QQ-branded Weibo service.

FORBES: Putting A Price On Sina Weibo, China's Answer To Twitter

According to Tencent, whose services include instant messaging service QQ, microblogging site Tencent Weibo - which is similar to Twitter - and online games, WeChat has close to 300 million users.

BBC: Tencent