Via BoingBoing, a cornucopia of interesting articles from a special issue of the Journal of Computer-Mediated Communication on Social Network Sites, edited by danah boyd and Nicole Ellison.
Eighteen articles in total, so I'll only list a few.
- Social Network Sites: Definition, History, and Scholarship by danah m. boyd and Nicole B. Ellison
- Every Blog Has Its Day: Politically Interested Internet Users' Perceptions of Blog Credibility by Thomas J. Johnson, Barbara K. Kaye, Shannon L. Bichard, and W. Joann Wong
- Writing for Friends and Family: The Interpersonal Nature of Blogs by Michael A. Stefanone and Chyng-Yang Jang
- University Instructors' Acceptance of Electronic Courseware: An Application of the Technology Acceptance Model by Namkee Park, Kwan Min Lee, and Pauline Hope Cheong
Oddly (ironically), you can't seem to be able to comment on the articles.