From the Web Association Standards & Services Utility Project (WASSUP):
Background: Whenever a page is not available, the proper error code is displayed; for example 404 Not Found, 403 Forbidden, or some other appropriate code. But how is one to tell if a page request is truly successful? An HTTP code does exist to describe a successful request, and it is high time we started to see more properly located resources on the World Wide Web.
To this end, it has been proposed that every successful page request should display a standard "200 OK" page which will inform the web-surfer that their search for this specific page has been successful. An example page is provided here.
Well, that’s certainly interesting.
