"@mashable: Cortana vs. Siri: Battle of the Virtual Assistants http://on.mash.to/QjQDL6 " fyi @joshuakoon 
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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~RT
@mashable: Cortana vs. Siri: Battle of the Virtual Assistants http://on.mash.to/QjQDL6Thanks. Twitter will use this to make your timeline better. UndoUndo
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