pg, is there any chance you could implement a basic tagging system for Hacker News comments? Right now there is no way to know if someone has replied to a comme

pg, is there any chance you could implement a basic tagging system for Hacker News comments? Right now there is no way to know if someone has replied to a comment without manually checking. For example, yesterday the user dweekly submitted a post about his new idea and after my initial comment, told me he would welcome further feedback. A tagging system would, in this example, notify a user like dweekly that someone had made a follow-up comment or reply. Just a thought.