Have you optimize your 404 error page? If yes how smart is your 404 error page? Recently, there is a so much hype about customized 404 error page, I have read 404 error page many articles about custom (stylish) 404 error pages. But Is it necessary (or really required) to have such page(s)? There are some obvious reason that at one or other stage of your blogging life you will be having a broke...