It is a North/South thing.
If you look at most of the new members on DuN that said they wanted a new home were from London, East Anglia, Somerset.
Very few (in fact can't remember any) that were from within the existing DuN area.
Not sure what "lack of involvement" means either tbh.
As Miles says most folk on here know and have met several others and that gives it a different flavour.
Humour here is a bit more irreverant as a result but generally because folk know the butt of the joke it is taken in the spirit intended.
Never really bothered with the old Ducatisti but did they organise regular runs in different areas around the UK? Track nights? Social gatherings?
How much more "involved" can you get?

Good luck to anyone setting up a forum. If it becomes successful because there is a need for it then fine.
DuN is a good vibrant community and that is because those in the Northern half of the UK are a different breed to those in the South and have a different approach to life.
Some from here may join other forums ( I look in on Ozz's site) but most folk arrived here because they felt more at home than in Ducatisti and nothing has changed.
Miles is doing a first class job with keeping the site fresh and adapting as it grows. (As Michael did before him)
It is a big cyber world. Live and let live.