Karma aka. Reputation is already a thing. It's not all that accurate because up-/downvotes from/in defederated instances aren't counted, but the information is out there for anyone who wants to know. See my 1st level reply to OP.
I'm sorry to tell you that an equivalent of Karma existed from the very beginning (though rather than being Upvotes minus Downvotes, it was Boosts minus Downvotes until a few days ago due to a bug). It's called Reputation and you can see it by viewing someone's profile in kbin. At the time of writing this, your Reputation points seem to be at 443. Reputation isn't being used for anything though, and while it can technically be tracked by anyone, lemmy hides that information so far.
[In fact, you can see who gave up- or downvotes to something and you can also see what someone up- or downvoted (or boosted, but that's a given, since boosting is equivalent to retweeting). This information is out there for anyone to access who spins up their own instance due to how federation works, so the developer of kbin decided to make it public so people are at least aware of this fact.]
Booooo, it's age restricted and I never managed to age-verify my youtube account.
Right-clicked on the link, copied link, went to archive.org, pasted link into wayback machine, selected most recent (in this case only) snapshot.
As you can imagine, it doesn't work if archive.org hasn't archived the link yet.
I'm neither blind nor have any family or loved ones who are, but seeing people on the fediverse add captions like these warms my heart every time.
You guys confused me because I couldn't see any emojis in any of your names. Until I clicked on @SgtSilverLining 's name and then the link to view the profile in the original instance. Turns out kbin doesn't have the concept of a display name, only usernames.
They won't be getting familiar with the fediverse though. They'll be getting familiar with Meta/Threads, as happened with Google Talk and XMPP.
Gabs schon vor Lases, also soll's es auch nach Lases weiter geben.
Als ob die original-Nazis mit Sozialem gross etwas am Hut hatten.
Ratschlag für Airbags nicht zu empfehlen
https://kbin.social/d/lemdro.id also gives a 404.
Just checked if lemdro.id possibly defederated kbin.social, but that's not the case. Could be that they have the same bug lemmy.ml had that blocks all requests from kbin instances.