So someone* should make a clone of archive.org but built on Tor. Maybe call it Torchive. And with no hiding because of robots.txt and possibly prevent users from looking at/editing the data on their server so a person who wants to clear themselves can't flood the net with nodes wanting data on this person and then wipe them all.
*someone who has the skills to make it, because I don't, at least right now
*someone who has the skills to make it, because I don't, at least right now