Where do I send my 404 Traffic?

[Porngoblin]

Originally Posted by Pagan

I have a custom page for The Erotic Cove (http://www.eroticove.com/missing.html)

Now that is one supercool 404 ...LOL

I do worry about the bots not finding a real 404 though so I want 2cl0ak my 404 using php so that anything that looks like a bot will get a real one. Just look for explorer, mozilla, opera etc in the user agent and assume its human if present, machine if not.