>I don't think it's murky - according to the court, all of those levels would be infringing.
You're saying that if I were to say "it's easy to find a blue ray rip of Captain America" (this is the whole of my reference, exactly in these words) then I would be guilty of copyright infringement? Because that is one of the lines in the sand. I don't see it. But telling you what to Google is nearly that.
Maybe, but remember that a little knowledge is more dangerous than none, and it's all I have :)
That said, from what I can tell, I don't think it's murky - according to the court, all of those levels would be infringing.