Questions from Lara-who-likes-uncluttering:
I somehow answered this, but it didn't publish!
The conversations are organised in different sub-groups, if you go to the conversationis page and scroll down you will see them!
The conversations you want to follow, you can click the 'Follow' button; and you will receive emails in your inbox when this happens.
Ning is around for some years now... I guess there are better platforms now. (not my cup of tea)
Keep posting questions if you have some!