Through an examination of ethnographic fieldwork data, this paper explores the ways in which cloud-based collaborative technologies created by Google "mediate" (Latour 1994) teachers' discussions around, agreement of and enactments of their classroom practices. Bringing together concepts from actor-network theory and literacy studies, this paper argues for greater consideration of the role(s) of increasingly-used technologies in shaping teachers' practices and suggests a framework for exploring this issue further.