I've never thought of starting a group discussion, I default to the main forums. If for nothing else I suppose it'd be good to post here at times simply for not having to convert measurements over to Imperial for those in the USA to understand!
There are a few non-US posters who translate all measurements into Imperial and just post that way, but being bloody-minded me I always post in metric with sometimes a conversion in brackets after it.
Now, what sort of discussions do we think would be better placed here than in the general area? Perhaps comparisons of vehicles? That could help with greater understanding between the States! Should I start another thread along those lines? What think we all?