Hi Yishay,
As a bit of an insider :-) I know there were worries about actually finding evidence from the participants but these show how much has been going on!
As is usual I found following the links and comments led me to other places. Having visited Helen's world I now wonder if there is such a thing as a MOOC junkie :-). As well as the edcmooc from Coursera I ended up looking at the Programme for Online Teaching, then off into discussions about Hangouts and Collaborations. Jane also shared how the OLDS MOOC had given her a real connection with Helen that sounds like it deserves to continue.
So I can see why you went with the label of Serendipity and learning - I also feel like I experienced it my self!
Patrick.