This paper provides an overview of twenty years of feminist philosophy in Northamerica. The professionalization of feminist theory that has occurred through the mainstreaming of feminist philosophy creates a danger of a gap between theory and practice that creates the danger of co-optation. Three stages of feminist philosophizing are outlined, including the radical critique, gender difference and difference/post-modernist stages. The last stage, it is argued, leads to an conceptual impasse about feminist strategies for social change.