Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Shouldn't we be having a customized error message:
Something like a sports blooper perhaps?
All grainy (beta) sites have the same 404 page. When the site is launched it will get its own theme. And it will get its own 404 page.
So when our site launches, we will have custom 404 and error pages.