Which lets you set filters so that you only see posts with a certain amount of activity, so you aren't spammed with every single HN submission in your feed.
hnrss is great. This is what most news sites get wrong, they might have RSS, but it gives you every new article and that can be over a hundred per day. And then they eventually conclude that no uses it and thus RSS is bad, when it's just their thresholdless implementation that's bad.
https://news.ycombinator.com/rss