We had a really interesting discussion yesterday about voting on Lemmy/PieFed/Mbin and whether they should be private or not, whether they are already public and to what degree, if another way was possible. There was a widely held belief that votes should be private yet it was repeatedly pointed out that a quick visit to an Mbin instance was enough to see all the upvotes and that Lemmy admins already have a quick and easy UI for upvotes and downvotes (with predictable results ). Some thought that using ActivityPub automatically means any privacy is impossible (spoiler: it doesn't).
As a response, I’m trying this out: PieFed accounts now have two profiles within them - one used for posting content and another (with no name, profile photo or bio, etc) for voting. PieFed federates content using the main profile most of the time but when sending votes to Mbin and Lemmy it uses the anonymous profile. The anonymous profile cannot be associated with its controlling account by anyone other than your PieFed instance admin(s). There is one and only one anonymous profile per account so it will still be possible to analyze voting patterns for abuse or manipulation.
ActivityPub geeks: the anonymous profile is a separate Actor with a different url. The Activity for the vote has its “actor” field set to the anonymous Actor url instead of the main Actor. PieFed provides all the usual url endpoints, WebFinger, etc for both actors but only provides user-provided PII for the main one.
That’s all it is. Pretty simple, really.
To enable the anonymous profile, go to https://piefed.social/user/settings and tick the ‘Vote privately’ checkbox. If you make a new account now it will have this ticked already.
This will be a bit controversial, for some. I’ll be listening to your feedback and here to answer any questions. Remember this is just an experiment which could be removed if it turns out to make things worse rather than better. I've done my best to think through the implications and side-effects but there could be things I missed. Let's see how it goes.
Yeah, I see that and it does concern me now that it has been brought up.
However. In the last 6 months of being active in the 'Lemmy.world defense hq' matrix room where we coordinate admin actions against bad people, vote manipulation has come up once or twice. The other 99% of the time it's posts that are spam, racist or transphobic. The vote manipulation we found detected using some scripts and spreadsheets, not looking at the admin UI. After all, using code is the only way to scan through millions of records.
Downvote abuse/harassment coming from PieFed will be countered by monitoring "attitude" and I have robust tools for that. I can tell you with complete confidence that not one PieFed user downvotes more than they upvote. I can provide 12 other accounts on Lemmy instances that do, tho. Lemmy's lack of a similar admin tool is unfortunate but not something I can do anything about.
What I've done with developing this feature is taken advantage of a weakness of ActivityPub - anyone can make accounts and have them do stuff. Even though I've done it in a very controlled and limited way and released all the code for it, having this exposed feels pretty uncomfortable. There were many many people droning on about "votes must be public because they need to come from an account" blah blah and that secure safe illusion has been ripped away now. That sucks, but we were going to have to grapple with it eventually one way or another.
Anyway. I'm not wedded to this or motivated by a fixed ideology (e.g. privacy über alles) so removing this is an option. It didn't even take that long to code, I spent more time explaining it than coding it.