Rant 2/n; 😎 = me, 💩 = client
The (brief but comprehensive) docs I sent my client contained the following line: "Any text that has not been translated will be highlighted yellow for the admins".

A day later:
💩: "Hey, I like the new design, but why are the titles yellow?"
😎: "They aren't actually yellow. You just see that because you're logged in and they aren't translated"
💩: "But the yellow doesn't look good with the design. Visitors will think it looks unprofessional. Make them not yellow!"
😎: "They won't see the yellow! Only you can see it so you don't miss any translations"
💩: "Hi, I just noticed some of the titles aren't in English. How do I translate them? And they're still yellow."

😐🙁😠😡🤬💥

Dear Sir, Mam, and anything outside and in-between.

If you feel like making a programming tutorial, go ahead. I encourage it. But please, please for the love of god make sure that your videos title and your video is in the same language.

Sincerely, the people that don't speak your language