AbstractA wiki, namely, Wikispaces is a component of Web 2.0 technology tools. It is utilised as a peer editing platform for students in correcting errors made by them in their essay writing. The purpose of this article is to find out how the affordances of Wikispaces encourage collaborative learning and knowledge management in correcting errors in L2 students‟ essays. The experience of using Wikispaces throughout the peer editing context and its affordances are described extensively based on three perspectives: pedagogical, social and technological. Data was obtained from online-writing records (students‟ essays), field notes, questionnaire, reflective research diary, and feedback form. The qualitative data are analysed thematically and then triangulated. In terms of pedagogical affordances, Wikispaces supports dual applications of pedagogical approaches (teaching and learning). In relation to social affordances, Wikispaces promotes a variety of interactions (peer-peer and students-teache.....