You mean normalnigs and plebbitors?
I might be taking it a bit too harshly here, since, for example, /a/ will always require quite the few active people to have any good conversations about any anime of the CURRENT season.
However, anyone can tune into threads about older stuff that people have most likely seen. Higurashi or Planettes, as an example for /a/.
So why don't you contribute to the site with something more too?