I've also been looking at questions about etiquette because they give another angle of asking. I think a good question would:
- Be about a situation where some 'formalized' rules of behaviour are expected. So, not asking how to do something appropriately, but actually showing an awareness that a certain practice or situation is surrounded by rules of etiquette.
- Has source-based answers that quote articles or rulebooks on the internet, instead of going by 'personal experience'.
After looking at the etiquette questions, I propose one of my own questions to be the candidate here: For how long after New Year's Day is it appropriate to wish people all the best for the new year? is both about a custom that comes with some 'formal' rules and has an accepted answer that cites an external source instead of experience.
My entire thought process is explained below because this is a hard one to make clear otherwise.
The two criteria I picked above are very limiting, especially if I look at the etiquette questions on main. But as an example of etiquette questions, I think it better to err on the side of something almost 'research-based' like, where answers can quote the rulebook, than something that's fuzzy enough where it could've been a 'normal' question, not necessarily one about etiquette.
I've looked at all questions tagged etiquette. I've dismissed the few that were about 'writing etiquette' because the site doesn't want to ask people what to write, and such a question could confuse new users.
I dismissed a bunch of others because they seem to me to be about situations that aren't necessarily 'formalized' enough to be etiquette (like What is the etiquette for asking a dog owner before I pet their dog?).
I also didn't pick any that asked about whether something is appropriate or rude (like Is it rude to ask tourists where they are from? or Is it acceptable to violate table manners in public due to my disability?), because again I don't want to goad new users into thinking such questions are always acceptable here.
The ones below seem to be at least about something that's actually 'etiquette', but their answers are all from experience or personal beliefs instead of 'quoting the rulebook', so I don't think they can be great examples:
There are two questions of my own that have answers that quote external sources:
Based on all of the above, I came to the conclusion that the one about New Year's wishes may actually be the best shot we have at these questions, because the one about April Fools' jokes seems more informal.