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Lemmy votes ARE public, should they be anonymous?
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this post was submitted on 19 Aug 2024
693 points (97.5% liked)
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Under activitypub, a lemmy community is kind of like a user (actually an activitypub group). When I post here with my lemmy.nz account to this lemmy.world community, lemmy.nz sends my comment to lemmy.world who then sends it to sh.itjust.works for you to see. The community is the controller of all interactions within the community. In this case, lemmy.world is the official source of how many upvotes this post has. And each vote is validated using the user's public key to ensure it actually came from that specific user - a standard part of ActivityPub.
So would lemmy.world assign a token for your votes? If your instance assigned the token, Lemmy.world would not be able to validate against your user's public key. If Lemmy.world assigns the token, it would only be valid in lemmy.world communities, as other instances would have to assign their own token. And both sh.itjust.works and lemmy.world admins could still see the real association.
Also, changing how votes work would break compatibility with other ActivityPub software (e.g. Mastodon could no longer interpret an upvote as a favourite, Mbin would't be able to retrieve any data about the votes unless they specifically changed to work in the Lemmy way instead of using standard ActivityPub).
Worst case scenario, there is an entirely separate, tokenized identity for votes which is authenticated the exact same way, but which is only tied to an identity at the home instance. It would be as if the voting pub is coming from user:socsa-token. It's effectively a separate user with a separate key. A well behaving instance would only ever publish votes from socsa-token, and comments from Socsa. To the rest of the fediverse socsa-token is simply a user which never comments and Socsa is a user which never votes.
I am not sure key based ID is actually core to AP anyway. The last time I read the spec it kind of hand waved identity management implementation.
Well hey, sounds like you might be able to help. Lemmy devs are actively soliciting opinions on lemmy votes, maybe you could have a say? Most of the comments are around "votes are already sort of public" therefore either a) make them actually public so we aren't pretending they aren't, or b) keep them hidden, a little less public is better than completely public.
Perhaps you can come in with a c) option to make votes even less public?
https://github.com/LemmyNet/lemmy/issues/4967
Maybe. I was kind of hoping someone else would run with this flag because I don't have a spare public GitHub account I really want to throw into this debate. I'm more likely to just implement it and then toss a PR grenade into the discussion in a few months if there's no other progress.