Please don't use HN primarily for promotion. It's ok to submit your own stuff occasionally, but the primary use of the site should be for curiosity.
I think the key word is "primarily". From what I've seen over the years here on HN, a certain measure of self-promotion is totally fine and even expected. But it's not considered cool to spam the site with your own self-promotional stuff all the time.
Please don't use HN primarily for promotion. It's ok to submit your own stuff occasionally, but the primary use of the site should be for curiosity.
I think the key word is "primarily". From what I've seen over the years here on HN, a certain measure of self-promotion is totally fine and even expected. But it's not considered cool to spam the site with your own self-promotional stuff all the time.