Ask HN: Why my post get [flagged]?
Why flagged?
Why flagged?
The second one looks too much like an informercial and it looks like some spam that is send from time to time. Traying to be as negative as possible: it's a listicle about training for a not very famous platform. I'm not sure that it should have been flagged, but I'm not surprised.
The first one is not so clear. Did you submit both in a short time frame? Sometimes posting something that looks like spam may make your simultaneous post look spammy. Moderation is never perfect. That the name starts with "amazing" doesn't help neither. Also, I tried to follow the link and I was confused because most of the first/second page is the UI of "Marvin" and it looks usable, but clicking doesn't work, typing doesn't work until you realize it's a screenshot, not the real page. Perhaps someone got annoyed of a page that doesn't work and flagged it. Did I already said that moderation is never perfect?
Try resubmitting Marvin tomorrow (it better to wait some time) and if it is killed write to the mods (hn@ycombinator.com). They usually give an official reply soon.