E.g. If I were to share an image of a doggo on lemmy.world and then people from sh.itjust.works upvote it, will it count those upvotes? The answer to this one seems pretty easy to reason that it would be yes.
But what about if i’m on lemmy.world and am subscribed to !awesomecommunity@sh.itjustworks and I see it in my “subscribed” feed? Does this reflect total points across the lemmiverse or will this just show upvotes from lemmy.world?
Yes upvotes are federated. Kbin factors in boosts too, these are also federated within and outside kbin - but not really used on Lemmy. Downvotes, a bit less clear - I think they are federated within/between Lemmy(?) but not with or between kbin instances.