Contributed by Organizations or Campuses; Articles, Papers, and Reports; Social Computing; and Privacy

Social network sites (SNSs) are increasingly attracting the attention of academic and industry researchers intrigued by their affordances and reach. This special theme section of the Journal of Computer-Mediated Communication brings together scholarship on these emergent phenomena. In this introductory article, we describe features of SNSs and propose a comprehensive definition. We then present one perspective on the history of such sites, discussing key changes and developments. After briefly summarizing existing scholarship concerning SNSs, we discuss the articles in this special section and conclude with considerations for future research.

The practice of using a social network to establish and enhance relationships based on some common ground—shared interests, related skills, or a common geographic location—is as old as human societies, but social networking has flourished due to the ease of connecting on the Web. This OCLC membership report explores this web of social participation and cooperation on the Internet and how it may impact the library’s role, including:

• The use of social networking, social media, commercial and library services on the Web
• How and what users and librarians share on the Web and their attitudes toward related privacy issues
• Opinions on privacy online
• Libraries’ current and future roles in social networking

The report is based on a survey (by Harris Interactive on behalf of OCLC) of the general public from six countries—Canada, France, Germany, Japan, the United Kingdom and the United States—and of library directors from the U.S. The research provides insights into the values and social-networking habits of library users.

College representatives at Educause conference ponder outsourcing e-mail to Google and how to embrace students’ Facebook habits.