I prefer someone who knows the languages and most of the rules for correcting me. So this person can be native or non-native.

People don't need to be non-native to make huge mistakes. I saw some "french" profil with horrible mistakes, I wouldn't say they are french by the way but they are considered as native speakers here.

I understand why native speakers can be better but we have to be careful about them as we would be about the others (in my opinion). When someone start correcting, the others think it is not necessary to re-correct it but it can be.

And that is why I think an option of popularity / seriousness / ... about a profil should exist. The thumbs up / down are not enough.

I really love your challenge! What a great idea! I hope I will be abble to follow your notebooks :)

I wanted once to do something similar like writing a beginning of story and continue it everyday (during a week for example). Unfortunately, I didn't find the time and I also was not brave enough ahah

Anyway, good luck!

To answer about the "who invites", I think it is a hard question. You can ask first if you want to (and feel it can be better). For example, after a little discussion, "est ce qu'on pourrait se tutoyer si ça ne vous dérange pas?" (As polite as possible, but it is better to keep the "vous" before the answer). You could also ask "puis-je te tutoyer?" (You already use "tu" here but actually, it is not a big deal in my opinion because you asked).

However, I think for some people it can be consider as a rude thing. So you can wait they propose you to use "tu".

I personnally don't wait for saying "please say "tu" to me but I am pretty young, that can be different with seniors / older people.

And about what Pauline said, I agree. If you feel close to someone you can use "tu" directly. But (just to know), some families use "vous" in their relationship (the children have to use "vous" with their parents), it is still pretty rare. And in the "serious" goals (like in work), we generally use "vous" (until the colleagues become friends, sometimes).

Yes it is Hongkongais and they are not all masculine.

We say la Taïlande, le Vietnam and actually, I don't really know the gender of the others because putting an "article" (le/la) doesn't sound great in my ears... I can't say if there are rules about that.

Maybe this can help : http://www.francaisfacile.com/exercices/exercice-francais-2/exercice-francais-57842.php