I find myself upvoting long comments, and then scrolling up to check if I upvoted or not. Definitely my ADHD brain lol, but I thought of something that might help! A little orange/blue line on the right side of the comment, the same thickness as the chain/thread lines, except all the way on the edge of the comment. This could be optional to turn on or off and would help keep track of what's been voted on already! Would anybody else like and use this?