Celebrate Facebook's anniversary as friendship day: Mark Zuckerberg urges 1.5 billion users
January 13, 2016 12:48 ISTNew York: Facebook's chief executive Mark Zuckerberg has urged nearly 1.5 billion users on the platform to celebrate the social networking giant's 12th anniversary as friendship day.Facebook turns 12 on February, 4.Zuckerberg who wrote the