Make 404 Pages much more helpful in WordPress
My Peachpit Web Design Reference Guide article about keeping lost visitors on your site has been published — Customizing WordPress 2.5.1: 404 Pages:
Friendly text and useful links in the
404.phpfile give your confused visitors a much more pleasant experience when visiting your site. They will stay, rather than go, and they may even come back again.
Make your blog just a bit friendlier. 