I can't think of any websites that have a top left menu, off the top of my head. The form factor is irrelevant so long as the navigation elements are intuitive and easy to scan (with your eyes).Top left menu and consistency in navigation structure throughout different web pages are some things that remain common with almost all websites.
PDF's have nothing to do with web design. They are a different form of media. If you are designing PDF's for web content you're doing it wrong.Keeping the PDF use to minimum as per necessity
What does that mean? I don't understand what you're trying to say.Don’t paying attention to search facility for site users
While I appreciate your effort to help educate other developers on development blunders, I don't think that much of what you said was useful. Your points were very scattered and disorganized.