An early practitioner in the use of the Web for learning, knowledge exchange and partnership building, Leslie is particularly interested in the roles of network openness and control in the flow of knowledge and their impact on local and international development. Since 2001, Leslie has been directing Bioline International, a collaborative platform based in CRIA Brazil for open access distribution of research journals from close to twenty developing countries. The goal is to better understand the design, structural and policy barriers that impede knowledge production and exchange. With Alma Swan, Leslie co-founded the Open Access Scholarly Information Sourcebook (OASIS) and the Global Open Access Map. A Trustee of the Electronic Publishing Trust for Development, Leslie is on the editorial board of Open Medicine, and the advisory board of the Scholarly Communication in Africa Project based at the University of Cape Town. He is also a member of the Research Dissemination Committee of the Canadian Federation of Humanities and Social Sciences.