Yahoo Answers (YA) is a large and diverse question-answer forum, acting not only as a medium for sharing technical knowledge, but as a place where one can seek advice, gather opin...
Lada A. Adamic, Jun Zhang, Eytan Bakshy, Mark S. A...
Web-based communities have become important places for people to seek and share expertise. We find that networks in these communities typically differ in their topology from other...
The asymmetry of activity in virtual communities is of great interest. While participation in the activities of virtual communities is crucial for a community's survival and ...
Peer production systems rely on users to self-select appropriate tasks and “scratch their personal itch”. However, many such systems require significant maintenance work, whic...
Aniket Kittur, Bryan A. Pendleton, Robert E. Kraut
As Facebook has become global, users from different cultural and socio-political contexts have joined the site. We present a case study investigating how both current and historic...