Valtonen, T., Havu-Nuutinen, S., Dillon, P., Kontkanen, S., Vesisenaho, M. and Pöntinen, S. 2013. Challenges with social software for collaboration: Two case studies from teacher training. Seminar.net. 9, 1 (Nov. 2013). DOI:https://doi.org/10.7577/seminar.2391.