Research sources

[2012 Statics.... The Big influences?]

 : http://ricker-wasabi-roll.blogspot.kr/2012/12/2012-world-didnt-end-as-we-know-itor.html

[65% of online adults use social networking sites]

 : http://www.pewinternet.org/2011/08/26/65-of-online-adults-use-social-networking-sites/

[The World's Most Active Twitter City? You Won't Guess It]

 : http://www.forbes.com/sites/victorlipman/2012/12/30/the-worlds-most-active-twitter-city-you-wont-guess-it/

[Social Media Center :  City of Boston]

 : http://www.cityofboston.gov/news/socialmedia.aspx

[Social Networking Service on Public Display]

 : http://simohosio.com/sns-on-pds/

[Social Networking Statics]
http://www.statisticbrain.com/social-networking-statistics/