First, it does not take into account HTTP-filtering software that returns its own specialised messages for pages that are off limits.
Secondly, it is just asking to fail some time in the future when the URLs are no longer valid. Why not just include an Apache-style listing in the test? Oddly, since it uses LWP::Simple (and skips when it’s not available), I can install it without any problem if I am installing LWP from scratch. But if I have an old version installed, it fails its test. That just seems all backwards. :-) (Also File::Listing does not say where bugs should be reported.)
