I think the Zeiss forum should possibly be renamed Zeiss/Contax. The Russian forum should be renamed Russian/FSU. I don't really want to go too far overboard with this. I think that Yashica/Petri/other compact rangefinders can be talked about in the main section of the rangefinder forum without much confusion. I'm not belittling those cameras, it's just that they probably don't have the userbase to have a forum of their own.
On rangefinderforum things are a bit different because that's all the site focuses on...but here, we don't really need to be that specific. At least in my opinion.