This paper adopts an academic literacies perspective to argue for a critical approach to the writing practices of the online university classroom. It describes an on-going action research project in an online Masters in Online and Distance Education (MAODE) programme at the UK Open University, which aims to create an online writing resource to support distance learners in developing a critical awareness of the writing practices on the programme. The paper presents the results of an evaluation study of this resource during the 2005 presentation of the MAODE, and discusses the evidence from this study that such a resource can provide a space for students to critique the dominant literacies of the online university.