I'm coming at it from the direction, where I see the primary action as "collecting" / "cultivating". Ex.
1. See an article you like
2. add it to bookmarks/instantiate the global bookmark
3. curate it a bit - add an archive link, some tags, link to related article
and then the reward is
4. get notified when someone else bookmarks it + comments, a week or a month later
so the inversion is - on HN/reddit, something gets posted once and there's a big discussion and it disappears. this is the opposite where the page grows over time
How did your project turn out?