I was working on another one of my websites and it’s always a good idea to make sure you have your 404 pages.
They provide you with visitors that would otherwise be lost if you didn’t have a 404 page up.
Here are some resources in setting up a 404 page on your website:
- Creating an Error 404 Page « WordPress Codex
- Official Google Webmaster Central Blog: Make your 404 pages more useful
- HTTP 404 – Wikipedia, the free encyclopedia
