I think it is absolutely acceptable (and good business sense) to re-submit to hackernews given a major update to re-engage the community and get feedback on new features etc. This, however, is pretty obviously spam.
My advice to jarvis if they want to stay regularly in front of this audience without spamming, is to only submit when a major update to the service has rolled out, or to create an interesting blog with valuable content and submit that to hackernews. Your brand can tag along with the content keeping you in front of our eyeballs.
My advice to jarvis if they want to stay regularly in front of this audience without spamming, is to only submit when a major update to the service has rolled out, or to create an interesting blog with valuable content and submit that to hackernews. Your brand can tag along with the content keeping you in front of our eyeballs.