Like the title says, if you want to upvote something on KBin, you should use the Boost link, not the upvote button (Why? Don’t know…)
The upvote button doesn’t seem to do much, but Boost accomplishes what Reddit’s upvote did. So if you’re looking to encourage a post, use the Boost link.
Because kbin can interface with content from mastodon AND Lemmy.
The boost is for mastodon/microblogs, the upvote is for Lemmy/threadiverse.
Upvotes are likes for mastodon but afaik they don’t do anything in mastodon except make you feel good that people liked your post.