Simon
You could put the province and even the small city I live in Canada and it still wouldn't identify me. That's only because I was careful of the info I have posted and I really don't have that much to loose if someone where to find out who I was.
I could post some of my past history here without giving any location and people would know immediately who I was. But if the previous posters had been under the assumption that someday their location might become known they probably would have posted differently.