Thanks @jslarve for starting the discussion on the newsgroups! 
Is there a list somewhere of message boards for Clarion users?
I know of:
ClarionHub (not optimized for threading)
NetTalkCentral (Not a general board)
Skype (I find this less than ideal)
These NG’s (I find the censorship less than ideal)
- For skype, see this topic
- NetTalkCentral
- There is a bit of detail on the Newsgroups over here
- Clarionhub, well you are here and as for threading… I think that if you give it a go here you will get the hang of the alternative model pretty easily. If you want to dig deeper then there are some good discussions on the topic already:
- From the man himself, Jeff Atwood Discussions: Flat or Threaded?
- On the discourse meta forum Threaded vs flat: Discourse’s way of handling responses is genius, but I have one small suggestion
There is also:
- The Spanish Clarion Wiki
- The LinkedIn Discussion Group
- The Clarion Programming community on google+