 Study of the ethical implications of SNS was initially seen as a subpart of Computer and Information Ethics (Bynum 2018). While Computer and Information Ethics certainly accommodates an interdisciplinary approach, its direction and problems were initially largely defined by philosophically-trained scholars such as James Moor (1985) and Deborah G. Johnson (1985). Yet this has not been the early pattern for the ethics of social networking. Partly due to the coincidence of the social networking phenomenon with the emerging interdisciplinary social science field of ‘Internet Studies’ (Consalvo and Ess, 2011), the ethical implications of social networking technologies were initially targeted for inquiry by a loose coalition of sociologists, social psychologists, anthropologists, ethnographers, law and media scholars and political scientists (see, for example, Giles 2006; Boyd 2007; Ellison et al. 2007; Ito 2009). Consequently, philosophers who have turned their attention to social networking and ethics have had to decide whether to pursue their inquiries independently, drawing primarily from traditional philosophical resources in applied computer ethics and the philosophy of technology, or to develop their views in consultation with the growing body of empirical data and conclusions already being generated by other disciplines. While this entry will primarily confine itself to reviewing existing philosophical research on social networking ethics, links between those researches and studies in other disciplinary contexts remain vital.