This article presents "a case study of learners’ perspectives and experiences in an online course taught using the Elgg online social network." We haven't heard a lot about Elgg recently but it remains an important model for online learning. One weakness of the case study is that it takes place in a traditional institution. "Results also indicate that students limited their participation to course-related and graded activities, exhibiting little use of social networking and sharing." Then again, this might just be a feature of the (very) small group studied. I think the discussion of Elgg is valuable, but would place the case study as just one out of (we would hope) many data points.