I feel like level 4 doesn't take http://www.mjt.me.uk/posts/falsehoods-programmers-believe-about-addresses/ http://www.mjt.me.uk/posts/falsehoods-programmers-be

I feel like level 4 doesn't take http://www.mjt.me.uk/posts/falsehoods-programmers-believe-about-addresses/ http://www.mjt.me.uk/posts/falsehoods-programmers-believe-ab... into account. Also, the question on level 4, "The only gramatically correct address in that file is", grammatically is spelled incorrectly. Since it wouldn't make a good hint, I assume it's a typo.