>I refuse to participate, on account of the overwhelming America-centrism. I realise that by doing this I'm skewing it even more, but
Not sure why you'd see it that way. Especially since the US has more English speaking folks than any other country[0].
Since HN an English language site and there are more (by a lot) English-speaking folks in the US than any other country, it's not surprising that there are more folks from the US on here than other countries.
What steps do you suggest to reduce the "America-centrism" of HN? Refusing to participate in a poll certainly isn't viable as a means to do that.
As an English speaking resident of the United States, I'd love to see more non-US stuff here on HN.
A poll that might be useful in this context is a comparison of the numbers collected here as compared with the location of submitters as a whole.
I've found that online translators mostly suck, which limits the usefulness of foreign language submissions on a site that's in English.