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

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.

These are key findings from online research and discussion evenings held in June 2007 for the Joint Information Systems Committee. The Joint Information Systems Committee (JISC) commissioned Ipsos MORI to undertake research among prospective university students to understand a number of issues:

• current levels of ICT (Information and Communications Technology) provision at school/college
• expectations of ICT provision at university
• any difference between expectation of ICT provision and that which is provided by HE institutions

These objectives helped to explore the hypothesis that there is a mismatch between student expectations of what they will be able to do and what Higher Education (HE) institutions can and do offer in terms of ICT. This study will form part of an overarching piece of research being undertaken by JISC to examine this hypothesis and inform HE institutions of student expectations of ICT provision.