Online meetings are increasingly popular in support of technology-enhanced learning collaboration. When these virtual meetings are recorded and shared in the host community and beyond, they can become artefacts in the learning process themselves and offer significant 'reuse' potential. In a longitudinal study of students working in a peer-support context, we explore how a series of such live events can, over time, develop an important 'trialogical' reuse function. This function is particularly

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... mportant in peer-supported learning at a distance, and in an international context where shared artefacts that are jointly produced within the community can be the focus of new and effective learning conversations. on collaborative media and social software. He has extensive experience in Macromedia Flash-based technologies and a background in design and art. His recent work involves the research and development of new collaborative multimedia tools including the FlashMeeting video conferencing tool, FlashVlog video blogging tool and the Hexagon ambient video awareness and presence tool. He is involved in a number of projects, investigating open sense making communities, reusable learning objects, webcasting large-scale live events, educational games and radio frequency identification.