Massive lists are cheap to store and cheap to search through. And the somehow is a question of ownership, we know how to make collaborative lists managed by owners/moderators.
Discussion
When I said whitelist, I meant to say key sharing. Like distributing read keys to a group of people. Distributing new read keys when you make a change to the list, that kind of thing. And then filtering out content for which you don’t have a read key.
There’s more than one way to do it, but no doubt it’s just easier if every user handles the compute themselves
No need for users to run servers for that, all of this can be done client side as long as you have mail system to share keys through.
Yes you can't immediately get a permission to read or write if none of the moderators are available, but the scarcity here can't be solved by an always on server, given the fact that you want humans to moderate spaces not robots.
I don’t really understand the second paragraph. Do you have any solutions for this in mind? Or none exist yet?
> as long as you have mail system to share keys through
This reminds me of Delta Chat. They have been moving more and more towards relying on email less and offloading as much as they can to like P2P stuff. I wonder if that would help. Email as a fallback for everything.