I found this gem on tree Calculus in another post (https://news.ycombinator.com/item?id=42373437) and thought it is worth submitting it for itself

It mostly ends up being a no-op because something that's already on the front page is not going to end up with a related thread at the same time.

Honestly I often publish just to keep a track :)

And it's more difficult to search infos in my fav comments than in my submission page.

Very very good material