This would be a nice feature for HN. Any links which have been previously discussed show up as a link with the total number of comments/votes also shown next to the link.
Edit: I noticed the 'past' link, but that takes you to the search engine. I'd prefer something more direct like what @dang just posted.
I use the "Refined Hacker News" extension, and it adds links to previous discussions at the bottom of the page
Very nice, I currently use a hacked up version of HNES, but it isn't updated anymore so I'll give this one a try.
Your work on HN is outstanding
Dang is a totalitarian liberal thought policeman. Hope you’re a San Francisco liberal or your opinions are banned. You’re free to express anything as long as you agree with his view of the world which, of course, must be the correct one.