I think for the most part the usual faces that appear in each section are due to those individuals having an interest and good knowledge of that particular subject.
I wouldn't say that they 'own' the section and I'm fairly sure in most cases that if you were to produce a valid case against something they said, you would at least be recognised and validated, even if you didn't change their oppinion.
That is after all the essence of debate and the backbone of the forums.
However, I do think in GD specifically, the above isn't always the case.
I wouldn't say that anyone 'owns' GD but there are a select few (who have already been mentioned) who will crop up time and again regarding specific topics. I have made my oppinion on these topics and the people involved before, and took a holiday for expressing my oppinion. I will admit that the way I expressed that oppinion was wrong, and I accept the punishment, but I still believe I was right. As a result I no longer bother to contribute to those topics.
The other half of GD involves threads that attract the usual crowd, like this one, but I like this kind of discussion because it's usually fairly well balanced and is often in good humour.
I spend most of my time in Photography now because there is no bitching, helpful people and a good atmosphere. It's also a subject that I find myself more and more interested in.
A few years ago my main section was motors, but I've spent less time in there since my interest in cars has dwindled.
I always come back to GD because of the wide range of topics covered but I have noticed recently that it's been taking a fair load of subjects more suitable to SC.
Panzer