This research described here examines the role of e-health and medical informatics through the lens of one e-health knowledge broker in Canada. Eating disorders are an important issue in Canadian health and it is difficult to find accurate information online. Theoretical models examined include those which describe the roles of health knowledge brokers, including those who advocate for critical social change. A case study is presented of one Canadian agency which brokers knowledge about eating disorders. This agency has a highly complex role which employs multiple technologies: telephone help lines, a website, and webinars. The help lines and email supports are designed to respond to questions about eating disorders and to refer individuals to service providers. When compared to the oft-cited role of the knowledge broker to disseminate research information, the key roles of this agency move beyond this, providing reliable and consistent information; brokering spaces for capacity-building; promoting crtical health literacy and advocating for health equity. [For the full proceedings, see ED562093.]