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Ask HN: Visually highlight the new comments since my last visit ?

Sometimes, I read a whole page a comments (+30) and when I come back later and refresh the page, the number of comments has increased.

Is there a quick way to visually highlight the new comments that came up after my last visit to the post page ?

Example: Let's say I visit a thread at 12:03PM. If I come back later, the comments that were made after 12:03PM are light green.

That way, I can quickly read the new ones without reading again what I have read already.

Thanks.

( 5 comments | 4 points | on HN )
Re:Ask HN: Visually highlight the new comments since my last... by coopr on Wednesday May 27, 2009 @02:04PM (#628852)
Oh heck yeah, this would make HN WAY more useful to me.

Currently I work around this by forcing myself to wait a while before visiting the comments page, then visiting it just once, because if I come back it is typically too time consuming to scan through and figure out which comments I've read and which are new.

Re:Ask HN: Visually highlight the new comments since my last... by boju1 on Wednesday May 27, 2009 @04:50PM (#629162)
Booya! Your comment somehow reminded me of a firefox addon I used and I totally forgot about ... until today. I am very happy, thank you.

Here you go: https://addons.mozilla.org/en-US/firefox/addon/3362

Screenshot of result: http://www.iconocast.com/B000000000000065/V1/News1_8.jpg

Re:Ask HN: Visually highlight the new comments since my last... by stcredzero on Wednesday May 27, 2009 @01:28AM (#628051)
Sounds like a job for a Greasemonkey script
Re:Ask HN: Visually highlight the new comments since my last... by boju1 on Wednesday May 27, 2009 @08:13AM (#628353)
Yes, that's what I was thinking. Has anyone done it before, or am I the only one frustrated when I follow long comments thread ? How do you guys do to avoid readind the comments again when you come back ?
Re:Ask HN: Visually highlight the new comments since my last... by arantius on Thursday May 28, 2009 @01:14PM (#630590)