You can search HN for other comments from the mods regarding the algorithm, but the short answer is that ranking is not a simple, transparent algorithm, nor is

You can search HN for other comments from the mods regarding the algorithm, but the short answer is that ranking is not a simple, transparent algorithm, nor is it independent of mod input. Ranking is dependent on time, commenting rate, user upvotes and flags (which don't result in a '[flagged]' tag until a threshold is reached), as well as mod input. Too much commenting activity can trigger the "overheated discussion detector", which can push a post down. Given that this has 213 upvotes and 319 comments (at the time of this posting), I'd say the latter is likely, though it's hard to say. In my experience, the quickest, most reliable way to contact the mods is via the Contact link in the footer. You might want to try that as well if you're looking for an expedient response.