The move from doctor-centred healthcare to patient-centred healthcare has the potential to enable people to become more actively involved in the management of their health care, especially with chronic conditions. The increasing number of community based support groups devoted to health issues reflects this situation. With the advancement in information technology some of these community based support groups are increasingly using websites, bulletin boards, mailing lists, and other internet-based tools as a way to transfer knowledge between their members. A better understanding of the role of such information technology tools in supporting knowledge transfer in health-related community based support groups would enable better knowledge transfer outcomes. As a first step towards achieving such understanding, we conducted a study of the current usage of internet-based tools by community-based healthcare support groups in New Zealand.