Plot hole: The dead young girl who wears white has hemophilia (uncontrollable bleeding), and her mother states that she's scared of all sharp metal objects (scissors, etc.), yet she goes to play in an old abandoned steel mill all the time.
Plot hole: Okay, so Jeanie (or Jeanine, I dunno) was a hemophiliac (she bleeds a LOT). Now, they said that she died by her worst fear, which was knives. The Doctor tortured her for TWO DAYS. Even if he didn't use knives the whole time, she would have been dead well before, having bled to death long before the 48 hours came to pass, because even bruises can be severely dangerous to someone with her condition.
Answer: The german male died from the hemoraging ebola-like disease that everyone who views the site gets. DOn't know any other way to describe it. As for the who made the website part, I have no idea.