What does 404 error page mean? It’s just a page that shows up when user tries to browse the page that doesn’t seems to exist anymore – link may be broken, moved, or even it has never existed and never will. Popular and good looking pages will always have good 404 error pages both from creative and functional point of view. Why? – if user hits such error page, it should do the best to help reader find what he is searching for, otherwise he will go away and may never come back.