At what point is it ok to have another run with the same (or tweaked) Show HN without being rude/spammy?
> Are reposts ok?
> If a story has had significant attention in the last year or so, we kill reposts as duplicates. If not, a small number of reposts is ok.
If you want to be even more certain, write a blog post and submit that.
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From what I've seen, the most popular "Show HN" posts are released at the right point in time. You can see that some projects get reposted once or twice with no comments then they randomly explode with comments one day. But it does get annoying when people repost their same project every month or so.
My advice is to post the project when it's been updated... and with luck it'll take off!
I have no idea if people would pay for this, but I think it could certainly generate a more thoughtful discussion than what I saw on this weekend's post.
If it again doesn't get attention, wait a few months for the next submission, I'd say.