Earlier quoted context omitted.
If somebody put something online fifteen years ago, they might not care about it anymore, but I might. With the current web, I can mirror that content by downloading it and putting it on a new server. With this system, that process would be part of the basic workings of the system.
Sounds somewhat like bittorrent.... as long as there is a "seed" then the content is available, but it falls apart when the last seeder disconnects. ... and it also sounds like usenet, but here everybody is a news server and they selectively host articles.
I wonder if this would also be possible in this case?
For example, my small server might serve 200 sites but I'll backup around 500 or so older ones somewhere else.