This document discusses a study on the effects of large class sizes (massiveness) on student participation in social technologies. The study examined a MOOC implemented in a secondary education setting. Researchers found that students in the larger MOOC course with 82% enrollment (versus 18% in the control group) were significantly more engaged with the social and collaborative aspects of the course. Specifically, MOOC students read forum posts 3.88 times more and produced 3.56 times as many forum posts as students in the smaller control group course. The researchers concluded that MOOCs can foster more active participation and interaction among secondary students when implemented on a large scale.