Gokunming has a history of a bit of brutal and offensive commentary on threads, from time to time. But it usually has been the type that moderation wouldn't really solve, and letting it go on by, seems the only answer.
But the anti-laowai trolling is another thing altogether, and could get out of control. That is just a form of interference with the forums and needs to be shut down.
I think there should be some moderation on that point.
I am not suggesting heavy moderation, except for simply banning people like Nicole316, which would be a good move. There will always be things people don't like on a public forum, annoying people, views we don't like etc. etc. But the anti-laowai stuff is just beyond the pale. I would prefer that people just don't feed those trolls, but there will always be someone who who will reply to them, and that means more will come.
Also, some people say if it ain't broke, don't fix it. Right, so I hope the KM staff are keeping abreast of whether most people think it broken or not. I have lived in Kunming for quite a while, and my (limited to be sure) impression is that most people wouldn't touch the GK forums with a ten foot pole, except maybe to ask for the location of a shop or the name of a doctor.
Finally, maybe a kind of sticky with basic forum guidelines would be good.