[Nono]

Obstinate, and nonsensical, and self-contradictory: "Many of you indicate the US is commonly refered to as 'America' by other than gringoes, I wonder how true this is. (...) Governments, official documents, authorities and such don't use 'American' to refer to gringoes, though colloquially people everywhere have."
Well, if colloquially people everywhere have, ain't that usage?

Here's a little something from the United Nations guidelines on the official names and nationality adjectives of its member states (in all six official UN languages). For the United States, in English it's "American". In French, "américain". Don't know Russian, but it appears to be roughly similar phonetically. Arabic and Chinese are indecipherable to me. In Spanish, of course (owing to frustrated colonial ambitions), it's "estadounidense" or "norteamericane" (hey, what about Mexico, isn't it in the northern hemisphere?).

So why don't you admit defeat, rummie? :p