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Computer mediated communication is increasingly being used in support of conventional university courses. This paper offers an overview of a series of detailed studies of small scale innovations across a range of disciplines at two campus-based UK universities. Most involved asynchronous, text-based interactions involving all students on a given course and the tutor or tutors involved. Observations, questionnaires and interviews were used to establish patterns of uptake and use of the new discussion media. Findings are discussed in terms of five “rules of virtuality” (Woolgar, 2002).