Well now I've created an Oxford Brookes ELSS discussion group on Facebook.
This was quite easy, but I was choosing options without a clear idea of what they would mean in practice - so it's a closed group (not open to the casual passerby), but I'm not quite sure how people can join it. I hope that makes sense!
I now have to find out if anyone else is on Facebook and whether I can invite them to join the group.
Any advice gratefully received!