Did you guys see that at ~1:39 in the video, "brainwallet" is a link/annotation that says "Clue #13". I can't click it. Was it there before?
No I haven't seen it before, actually I'm sure it wasn't there before, but someone already got clue #13 so it doesn't matter that much now.
This was mentioned earlier in the thread. It wasn't there originally, but was added after Clue #5, and was what "9 YouTube 7" was referring to.