- Spam: obvious self-promotion, with no useful content or when irrelevant.

- Personal attacks: going after the person instead of the idea.

- Irrational hyperbole: very strong claims not backed up by logic or evidence.

- Bad faith: deliberate misreading, quote-mining, or straw-manning the OP.

- Hate hijacking: attempts at using this platform as an outlet for political propaganda.

Linking to your site in every single comment will get downvotes. It's not a hard rule, there are a few exceptions, let's say it applies 99% of the times.

Using a sockpuppet/coworker/whatever like https://news.ycombinator.com/submitted?id=puildupO to make questions so you can reply with a link to your site will get downvotes.

The usual suspects: spam, advertising, that guy who had an LLM hallucinate a holy book, $X with "AI", but additionally there are certain sites that I automatically flag posts of. I don't auto-downvote political or economic comments unless they're low effort slogan level.

my tool clipnotebook.com, It lets me save links as visual cards and organize them into playlists, I can share a playlist or the whole notebook with one link.,The best part is there is no login, It generates a private key URL that gives access to your notebook