I genuinely feel like there is something happening where hackernews articles come in bunch/reference-to-each-other :]
So one of the comments on one hackernews post on front-page almost somehow always refer to something within a hackernews post on the same front-page. I have seen this witnessed too many times that it might be time to name this phenomenon.
people see one article reach the front page and it reminds them of another article and they post that one too. cycle repeats.