Even in the short term, link rot can be so maddening. For example, does anyone know where to find the demo described in this article? <a href="https:&#x2F;&#x2F;www.unrealengine.com&#x2F;news&#x2F;epic-games-releases-epic-citadel-on-the-web" rel="nofollow">https:&#x2F;&#x2F;www.unrealengine.com&#x2F;news&#x2F;epic-games-releases-epic-c...</a><p>Nevermind the technical challenges, there seems to be hardly a culture of this even mattering; other than for transferring page rank to the new location of pages for SEO purposes :&#x2F;