I did an Ask HN one time something along the lines of "how would you game the HN ranking algorithm?". It seems like good security practice IMO to have a discussion on what is publicly known / discernible about the ranking algorithm.
This was during the time of the election so I was thinking along the lines of political astroturfing, but also to guard against companies unfairly promoting their products or suppressing posts related to a rival company. For instance, if someone really wanted to keep a discussion off HN, all it would take is to tangentially start a flame war over some sensitive issue and watch the ranking algorithm punish the ensuing vitriol.
This was during the time of the election so I was thinking along the lines of political astroturfing, but also to guard against companies unfairly promoting their products or suppressing posts related to a rival company. For instance, if someone really wanted to keep a discussion off HN, all it would take is to tangentially start a flame war over some sensitive issue and watch the ranking algorithm punish the ensuing vitriol.