General forum etiquette is to actually read a forum before you post in it.
I agree with you. I still want to hold on to what I said about courtesy and etiquette being irrelevant and subjective.It isn't a question of rules. Just a quick glance should tell anyone that this place is almost entirely in english, so it is a basic courtesy to at least just ask if anyone else speaks portugese first.
Using another language is fine, what isn't fine is showing no concern for being understood.
I would, actually, yes. English is not my mother tongue and English is a very "global" language. Of course, if I could speak the language of the country I'm visiting, I would speak that language.Would you go to a foreign country, walk into a bar, and start talking to the first people you see in english.