[gokhan]

Any idea on the non-native/native English speaker ratio of that list? US / Rest of the world?

[mjn]

I tallied locations ~9 months ago [1]. Of the top 100 posters, I could determine the location of 81. Those broke down as 54 US, 27 non-US. Mostly from English-speaking countries: US/Canada/UK/Australia together accounted for 69/81 (85%).

[1] http://www.kmjn.org/notes/hacker_news_posters.html