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.
Peter V. Marks, Peter Polak, Scott McCoy, Dennis F. Galletta. Sharing knowledge. Communications of the ACM, 51(2):60-65, 2008. [doi]
Abstract is missing.