user structure differences between SE sites

Question

I just noticed a big difference in the user structure of Serverfault and this site (the two I use). Having a look at the first page (36 people) of the most active users this year this turns out:

Serverfault (Top 10)
USA : 22 (9)
abroad: 13 (1)
unknown : 1 (0)

Linux & Unix (Top 10)
USA : 9 (3) 
abroad: 18 (6)
unknown : 9 (1)

Of course, that's nothing you have to think about. But one may find that interesting. You could guess that the importance of Linux & Unix is much higher outside the US than within. Or that the foreigners have good (compared to SF) local forums for professional IT but rather bad local forums for Linux & Unix... ;-)

Answer 1

With less *nix machines around, there is less incentive to provide courses and write books in local languages for these systems. Therefore the general server administrators population will have a larger proportion of people not fluent in a second language than the *nix administrators. This will reflect on more people who can be assumed to have English as their primary language on a general site like serverfault than on a specific site like *nix.

This is primarily based personal observations having lived in five different countries (if you do not include Bavaria), visiting local bookshops' IT departments, reading local IT newspapers etc. Also, I would say *nix administrators are generally more resourceful (have to be), which I think reflects in being able to master a second language like English.