While this is true, the point that was being made is that there are observers here that are not "one of us" and may not understand in-jokes or be tolerant of tempers. If these are people that are considering doing business or supporting ETS, and they are turned off by what they see in the forums, it would be a Very Bad Thing. I imagine we would cetainly be curteous if such a person registered and posted here; we must also behave this way because they _might_ be here.
So just remember that it's like a one-way mirror; just because you can't see someone back there doesn't mean they're not watching you.