"Steven P. McNicoll"

I didn't say it was a "USA group". I said it's assumed that people are
posting from the USA unless they make it known otherwise. That's a
reasonable assumption because the participants are overwhelmingly from the
US.

Define "overwhelming". Then back your claim with figures. Even if it's
90%, that's no excuse for the intellectual laziness of "reasonable
assumption" and it hardly makes it incumbent on any non-US participant to
make an overt reference to their non-US status. Your suggestion is idiotic,
unnecessary and recommended by nobody but you. Your lack of presumption is
touching, though.

moo