The rise in social computing has facilitated a shift from consumer cultures to cultures of participation. These developments represent unique and fundamental opportunities and cha...
Social software, such as blogs, wikis, tagging systems and collaborative filters, treats the group as a first-class object within the system. Drawing from theories of transactiona...
Online communities have something in common: their success rise and fall with the participation rate of active users. In this paper we focus on social rewarding mechanisms that gen...
In this paper, we summarized recent work in modeling how users socially forage and search for information. One way to bridge between different communities of users is to diversify ...
Despite many works in CSCW, groupware, workflow systems and social networks, computer support for human-to-human interactions is still insufficient, especially support for agility,...