The most challenging, and potentially rewarding, aspect of knowledge management, and systems to support knowledge creation and innovation, is that of collective knowledge in a group or community. In this paper the term “mobilisation” is preferred to that of “management” as it is more closely related to creative activity. Technology used for knowledge mobilisation should be developed, not on its own, but as a component of a broad socio-technical system. This paper will present the results and implications of collaborative research into the development and evaluation of socio-technical systems designed to mobilise knowledge in communities.