As far as a Union only site why not? Any club or group can get together and share amoung themselfs.As with the article that was reprinted here it was from a union only publication. But in a open forum it is just that open. And to exclude anyone would then end the idea of an open forum. I agree with others that to share our knowledge with the untrained is dangerous and myself will not respond to questions that come from someone so untrained they dont speak our language.