I agree with you for the most part -- but how many times do you return to an old HN or Reddit thread a few hours later? It's very hard to see which comments are

I agree with you for the most part -- but how many times do you return to an old HN or Reddit thread a few hours later? It's very hard to see which comments are new. Even though I like threaded discussion I get a warm feeling about seeing that new posts notification on a flat thread I was posting in earlier, and it will make me go back and read the new posts, whereas on Reddit or HN I usually only go back if someone replied to me.