For HN I prefer this one: https://github.com/andreicristianpetcu/HNMarkAllRead/releases https://github.com/andreicristianpetcu/HNMarkAllRead/release... (chrome

For HN I prefer this one: https://github.com/andreicristianpetcu/HNMarkAllRead/releases https://github.com/andreicristianpetcu/HNMarkAllRead/release... (chrome one is in the store) It marks comments or posts as "read" (or "seen") for a whole page and than hides them. And you can tell it not to hide posts where you "subscribed" to the comments. I can never go back, so tired of skimming over the same top posts all day again and again. I think it also does tree comments.