I encountered the same behaviour, and I'm glad to learn of the reason. Up here from the peanut gallery though, may I comment that it might have been better to redirect to a page that explains that the page being sought is being hammered from an external site, rather than just saying Forbidden.

At first I thought it was the crazy Everything servers playing up. Now I wonder whether, when other people see that bare error message, they will conclude that those dumb Perl hackers can't even configure a web server correctly? I find this highly ironic, given the argument of the OP of the the thread in question.

mod_rewrite'ing that node id to another static page is not all that difficult (although I can appreciate the tuit cost).

dislaimer: I put this thread on the front page, because I think it's important for people to know about; you may refrain from upvoting this node and ++ the rest for the efforts undertaken and explanations given.