That's the one, and it's one third of all the links I've ever posted, or, probably, will ever post. What you say may be true, but it was still immediately flagged to death, regardless of how that happened, and the HN software is still trying to be sneaky about it. If my contributions are treated as spam, I'm not going to persist.
Certain domains being blacklisted is completely understandable if you consider the history of the site and culture(s) of the users. It's nothing to do with it being "your contribution".
That could be handled with an error message instead of assuming bad faith on my part. Given that it was handled (and continues to be handled) with sneaky shadowbanning measures, I have no interest in attempting to circumvent the spam filter by submitting future links.
Shadowbans are used here for the same reason anyone else uses them to handle anything: to avoid tipping off outsiders (especially ones who might be trying to automate attacks).
