made the extention as a greasemonkey script. But for now not working on hn: https://greasyfork.org/en/scripts/20937-red-read-line https://greasyfork.org/en/scri

made the extention as a greasemonkey script. But for now not working on hn: https://greasyfork.org/en/scripts/20937-red-read-line https://greasyfork.org/en/scripts/20937-red-read-line To avoid a custom solution for HN i need to experiment on how demanding it is to add scroll listeners to every div on a page...