Kbin currently lets you see who upvoted or downvoted a thread/comment through the Activity button.

I think it’s a bad idea to make that information public, as it is almost certainly going to be the cause of arguments, bitterness, drama, and tit-for-tat downvote wars.

Although some might feel that this might be useful for accountability, I think that ultimately, it will cause far more problems than it will solve.