Thanks for sharing this! Replies to my comments are interesting but I've been curious about an efficient way to see new comments on a given article _that I haven't already read_. I think this site plus a good feed reader would do the trick.
Sometimes I come to a particularly interesting article in its early stages before there are many comments or I read through all the comments of a mature discussion that continues later. I'd like to be able to see what is new without rereading many comments.
My ideal would probably be an interface similar to mutt that shows all the threaded comments of an article. Keyboard driven, of course. Almost a bit like HN as newsgroups!
https://hnrss.github.io/