TSS runs on Tomcat?
Looks like TheServerSide.com runs on Tomcat - or at least that's what their 404 page says. I don't know which is better - TSS's 404, Javablog's 404 (blank page) or JavaLobby's. It's hard to believe that major sites like these don't have better 404 pages.
For those of you who want to add a 404 page to your Java-based webapp, it's as simple as adding the following to your web.xml:
<error-page>
<error-code>404</error-code>
<location>/404.jsp</location>
</error-page>
Props to InfoQ for implementing a 404 page, even if it is rather useless.