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Abbitt, J. & Ophus, J. (2008). Exploring the possibilities of using social networking sites in online learning. In C. Bonk, M. Lee & T. Reynolds (Eds.), Proceedings of E-Learn 2008--World Conference on E-Learning in Corporate, Government, Healthcare, and Higher Education (p. 540). Las Vegas, Nevada, USA: Association for the Advancement of Computing in Education (AACE).