This paper reports a 5-year design experiment on cumulative knowledge building as part of an international project. Through a longitudinal study and analysis of cumulative research data, we sought to answer the question, "what happened and why in knowledge building?" Research data constitute messages which participants have written into a shared…

Discussion forums have been used to support organizational communication and they have become a candidate for study of organizational behaviors. However, online behaviors of NGOs have been insufficiently studied compared to those studies conducted in education and industries. Our empirical study examined how social workers in one NGO used an…