Take a hint from nature
You are all of you huge backups of a system, parts of which are millions of years old. The tried and true method used to preserve the shark design these past few hundred million years is how our older data is essentially already being preserved as we copy data we care about from one generation of technology to the next.
Could we design a living thing to carry copies of data of interest into the future? Probably. Meantime, though, we need to ensure that as time marches on we make copies and copies and copies.
I have stuff on tape and disks from decades ago. It is basically not recoverable and some stuff was actually lost. Going with a specific media is not the answer. The answer is to have an ongoing program of backing up and copying forward and to do that you need, not rarefied exotic storage meant to last a thousand years, but rather a ubiquitous interface connected to the rest of the world. I vote for the Internet. That's where real men put their backups, after all.
Stuff written in the Reg may last longer on paper if someone bothers to preserve them. However, they would have to bother. This way, with it sitting on their disks, being archived at archive.org and no doubt gems like my comments being copied off by others for posterity and scholarly research, it is both preserved and actually available to use. The reason? It is being copied forward to ever cheaper storage because it is easy to copy a rack of hard-disks compared to preserving stacks of boxes.
Biting the hand that feeds IT
