>Yet, that's what's happening with the 451 error code. This is clearly aimed at government censorship - what the writer considers the wrong kind. I'm not sure

>Yet, that's what's happening with the 451 error code. This is clearly aimed at government censorship - what the writer considers the wrong kind. I'm not sure I agree. While the author may have a certain connotation in mind, "not available for legal reasons" is a simple statement of fact that can be useful for the user, regardless of whether it was a "good" or an "evil" law. >Unless I'm mistaken, "client" means the browser, not the person operating the browser. So it shouldn't return a 404? Are you proposing the use of 6xx codes for user error, and keep 4xx for purely client errors? How can the server distinguish between a browser and somebody using telnet? What if another program is performing automated clicks in a browser and navigates to google.com/asdfhjk? I believe the "client" is "everything on the other end of the tcp connection."