LISBON, PORTUGAL - MARCH 13, 2014: Photo of Pinterest, Twitter, Facebook, Google+, Linkedin, Whatsapp and Instagram homepage on a monitor screen. These are popular social networking websites.
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LISBON, PORTUGAL - MARCH 13, 2014: Photo of Pinterest, Twitter, Facebook, Google+, Linkedin, Whatsapp and Instagram homepage on a monitor screen. These are popular social networking websites.