Keith N. Hampton, Lauren Sessions Goulet, Lee Rainie, and Kristen Purcell, “Social Networking Sites and Our Lives”, Pew Research Center’s Internet and American Life Project, June 16, 2011, http://www.pewinternet.org/~/media//Files/Reports/2011/PIP%20-%20Social%20networking%20sites%20and%20our%20lives.pdf
