If you click on the “more” button under a comment or link there will be an activity tab. In this tab you can see everyone who has boosted, favourited or reduced the post. I’m not sure if this a
Is a good feature but it’s interesting to see when someone decides to reduce all of your content for no reason.
That’s a bug. It’s not on purpose. Upvotes used to be boosts and it was changed. Reputation is extremely unimportant, so that place hasn’t been fixed yet.