When I rollover the place where the "Upvote" and "Flag" buttons should be on a comment I've flagged, I get just the little flag icon. Fine, but clicking it does nothing, and is just confusing -- I have to wonder about why I can't flag or upvote this comment.
Perhaps a red "You cannot flag a comment more than once" or "You have already flagged this comment" dialogue, or just a tooltip when I hover the flag icon with one of the aforementioned texts.
