My views on location is to identify whether or not this is an ESL (English as a Second Language) or more specific ETL (English as a computer Translated Language) situation. As far as not responding to certain areas, I would discriminate by the topic, but then all topics must run through a discrimination filter ... and over unity is one where I choose not to participate.
Location is also a discriminating tool for when one recommends sources of supply.
I could care less if the person is black, white, yellow, brown, polka-dotted, or has a third eye. Those are not the attributes germane to discussing a topic. KSA's (knowledge, skill, and attitude) dominates in the discussions. The "other thread" in General Chat is a prima fascia case where KSAs, or more specifically, the lack thereof, would lead me to not participate. It was painful enough reading that thread to put the associated thread in the members area in context. This does not mean a newbie's questions would go unanswered, as they would be treated differently.