Yes, this blog is made by French people.
Yes, if you're French, you're very welcome to submit (the button is right under).
Yes, some of those facts can apply to you even if you're not French. It doesn't mean they're not accurate.
Yes, any message is welcome, and I read all of them even though I don't answer to everyone.
Yes, this blog is in English. Because it's not only a private joke, it's a way to show the world our little French things.