Empire404.com offers a program specifically made for turning your “page not found – 404 error” info profits.
The program offers a site redirection to your online business when potential clients miss type your URL or actually it could even happen to yourself, you typed your site’s URL wrong and chances are that if potential customers get the 404 screen error they wont come back to your web site. Empire404 program ensures that any kind of URL typing error will still deliver your potential customers to the web page they want to. Signing up to this service is not free and you will be redirected to another web site which will tell you the benefits you get and how much is the service. The program covers the following screen errors, 400 bad syntax, 401 unauthorized, 403 forbidden, 404 not found, 500 internal server error, 502 overloaded and 503 gateway timeout. 
