Well, I'll take it on.  The term 'Zero Gravity' is completely wrong.  An astronaut on the Shuttle or ISS is subject to the gravity field of the Earth, which is after all what keeps them in orbit.  For Wikipedia to blindly propagate sloppy science would be to make us part of the problem.  Even if it's a widely-used term, if it's scientifically incorrect, we would be irresponsible to simply parrot the popular misuse