This seems like something the forum s/w could help with. Maybe store or fingerprint the link target when posted and provide some warnings before it glibly serves the same link after the domain has been pirated years later? Or use some sort of link blacklist and do some pre-fetching and safety checks? I’m probably not web/hosting literate enough to suggest a fix, but someone should have an idea how to prevent old link landmines like this which may be buried here.
