[mtmail]

Stories can be on the front page for 30 minutes or over a day, it depends on how active it is. I've even seen fewer minutes and longer stories.

Downvoting buttons disappears after a day, upvoting never. One can comment for 14 then, after that the 'reply' link disappears.

If you want more/faster stories use the 'active' list https://news.ycombinator.com/lists or 'new'. If you want to check less and not miss good discussion use https://news.ycombinator.com/best

There's twitter account which only tweet stories which got at least 250 upvotes https://github.com/adriel/awesome-hacker-news#social-media

[greenyoda]

You can also see highly-ranked stories from previous days here:

https://hckrnews.com

Also, old posts never disappear from the site, they just fall off the front page. You can use the search feature to find stories that interest you, no matter how old they are:

https://hn.algolia.com

[tsjq]

those are helpful links. thanks for sharing !