This book explores how identities emerge and are negotiated by young people in online facilitated dialogue, a form of virtual exchange. It offers a framework for this type of exploration based on the assumption that both the situated context and the technologies mediating online interactions influence, but do not necessarily determine, the interactions taking place and the participantsÕ identity orientations. Identity is viewed not as fixed and static, but rather multiple and fluid as interactants position themselves in relation to one another. This framework is then applied to the analysis of one specific virtual exchange context, and the interactions over several weeks of a group of participants from a wide range of backgrounds.