Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Vanessa Paz Dennen. Pedagogical lurking: Student engagement in non-posting discussion behavior. Computers in Human Behavior, 24(4):1624-1633, 2008. [doi]
Abstract is missing.