Morning Helen and Mary,
as an afterthought, I realise this might be putting you both on the spot a bit-because I realise the MOOC is establishing itself-as you both are as teachers with online learning and teaching. It is all new, I realise this, but great eh!
So, I am meeting a colleague from one university this coming Friday-they currently use Bb, so I like to chat about MOOCs and the value-added, and Moodle and so on. I too will spend my time putting together my thoughts, and when I have a coherent picture-I will share here.
I hope that is helpful.
Apologies for putting you both on the spot there!