Google give enormous priority to new content, especially on very well referenced and active sites like HN. So it probably doesn't mean as much as you think.
I can search for many technical terms that have recently been posted to HN and it and appear in the comments and it won't come up on the front-page, let alone the first two items.
[–] Rexxar 4 days ago
[–] Maxatar 3 days ago