But I think you also have to take into account the context of the comment. A glib comment would seem out of place in a more "HN-centric" post about VC or Scala

But I think you also have to take into account the context of the comment. A glib comment would seem out of place in a more "HN-centric" post about VC or Scala or something, but when a fun story about, say, brewing coffee makes the front page I think the comment standards should naturally loosen up.