Hello Lou,
As a member of JewishGen, I agree with a lot of what you say. Jewish genealogy requires certain additional skills that most people on this forum would not need, and JG would be a logical place to start.
However, it has geographical limitations. Specifically, there are very few members researching British Jewry, so if someone's Jewish ancestors moved to the UK many generations ago, there would be as much help, or more, available here.
In fact, in my experience the very helpful members of JG are not always aware of the intricacies of naturalization and where to search for that all important piece of paper that can reveal the original birthplace of the Jewish imigrant.
Our fellow rootchatters come from a wide variety of backgrounds and I would always recommend anyone starting out on the genealogical journey to start here.
I'd be interested to here about your Jewish ancestry. Maybe I can help.
Justin