cheer our day, provide interesting contenct. Give and take relationship. Nevertheless, privacy, sharing information, data collecting are important topics that should take taken easily. References: http://www.smartinsights.com/social-media-marketing/social-media-strategy/new- global-social-media-research/ https://www.facebook.com/policy.php https://www.theatlantic.com/technology/archive/2014/06/facebook-is-expanding-the- way-it-tracks-you-and-your-data/372641/ https://zephoria.com/top-15-valuable-facebook-statistics/ https://www.snap.com/en-US/privacy/privacy-policy/ https://www.instagram.com/about/legal/privacy/ http://www.businessinsider.com/snapchat-user-data-2014-11 https://www.cnet.com/news/what-is-the-nsas-prism-program-faq/ https://nsa.gov1.info/dni/prism.html