I would stop by in the German sub forums from time to time. But what I like about APUG is, that it is international. That means that you reach far more people in the English part of APUG. If it is just about talking traditional photography in German, then there are already some forums in German outside of APUG (mono gave an example). My point: For me, a single tiny sub forum to talk about German/Austria/Switzerland related topics like get-togethers or the like would be enough and even using German to talk about get-togethers may keep away people not speaking German, who would otherwise join such a meeting. To lock those people out would be a pity.