Absolutely. They can't use it back.

SSH/SFTP?

I don't know, but it could be interesting to try. I could easily imagine topic-focussed servers that go into more depth on specific topics. Perhaps you would only federate things that are at a high level, or directly linked. Kinda like a wiki, but with each community doing it's own decentralised curation and moderation..

I haven't seen any spam on Lemmy yet, and only a tiny amount on mastodon (I'm much more active there).

Man, their website is pretty off-putting. Where's the get-started/dive-in type page? How do I use the thing?

You can do that with NoScript too. Is the Umatrix UI any better, or are there other benefits?

Nope. Died like Digg and a bunch of others. There's a run down here (which I only quickly skimmed): https://productmint.com/what-happened-to-stumbleupon/

What would be really cool would be an open source, federated version of DMOZ

Yeah! StumbleUpon was cool. Something about how it tried to engender serendipity.

Such a pity that so many other good recommendation engines died or succumbed to enshittification.

It depends a lot on your screen, and your lifting situation. Black on white is better in day light, white on black is much better on LED screens (as opposed to backlit LCD or CRT monitors).

Yeah, I got it. Was just commenting on the poetry of the sentence.

That's an amazing sentence

That's a hall mark of our civilisation/society, not our species. Humans have been around for hundreds of thousands of years, and the vast majority of cultures in that time have been relatively stable, with checks on excessive greed.

(see Graeber and Wengrow's The Dawn Of Everything for some good examples.)