Some forums just seem to run their course - when I first came to France the expat forums were very lively, but now few people are moving to France, and the old hands don't need advice on tax, health, plumbing, etc. There was a big falling out about two years ago and some people left one forum and started another, but that also lost a lot of members because of infighting.
I hold very strong views on many subjects and I enjoy debating questions of principle - however, I try to remain courteous and do
not make personal remarks unless really provoked!
I suppose much depends on whether you are used to discussing important subjects like religion, politics and sex but it seems a shame to close down a debate just because some people might object to others' views.
If I am not interested in a subject (like crafts/knitting) I simply don't open that thread.
I already spend too much time on this forum (although I multi-task by watching TV at the same time) so I don't think I will bother posting on the other forum, but I might look in from time to time. I don't think I could go in disguise - I am told I have a rather distinctive 'voice'.