This paper focuses on online gift exchange in a setting where online and offline interactions are tightly intertwined and most of the exchanges require face-to-face interaction to...
Abstract--The increasing popularity of social media is shortening the distance between people. Social activities, e.g., tagging in Flickr, bookmarking in Delicious, twittering in T...
Social media has changed the way that people collaborate and share information. In this paper, we highlight its impact for enabling new ways for software teams to form and work to...
-- Assessing the value of individual users' contributions in peer-production systems is paramount to the design of mechanisms that support collaboration and improve users'...
Elizeu Santos-Neto, Flavio Figueiredo, Jussara M. ...
Social annotation systems such as SparTag.us and del.icio.us have been designed to encourage individual reading and marking behaviors that, when shared, accumulate to build collect...
Les Nelson, Gregorio Convertino, Peter Pirolli, Li...