Link Rot and Permanent Hyperlinks

We juggled with link rot since the earliest days of the Internet.  As we were trying to build from existing Internet content.  You can point to anything, but that thing can go away without warning.   There is a significant part of the Internet that has disappeared.  MJ Perry on the market for permanent hyperlinks.  We examined approaches like the Internet Archive for making content accessible.  For example, here is the archive for this blog up to May 30 of this year.  He covers some new explorations in this direction to make content selectively more permanent, like Perma.cc, soon to be made generally available and free.