By Ian Sherr The social network follows through on its promises to refine and expand its capabilities, as the pressure to boost user growth continues.

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Source:: http://cnet.com.feedsportal.com/c/34938/f/645093/s/42c0b2c5/sc/46/l/0L0Scnet0N0Cnews0Ctwitter0Elaunches0Egroup0Emessages0Ebrings0Evideo0Eto0Eits0Emobile0Eapp0C0Tftag0FCAD590Aa51e/story01.htm