For most communities, especially some of the smaller ones, have posts that are only as recent as 2 months ago at best. I noticed that there is frequent activity on The big communities such as "chapotraphouse", "chat" and "news"... but that same frequency of activity isn't replicated on most of the other communities.
For communities like "movies and tv shows", it feels like visiting a ghost town.
Is activity for people here mostly off this site and elsewhere? Did I not get an invitation or something? It feels like, with regards to activities such as playing games or watching a movie, I see no signs of people on this site doing anything.
So why are most communities lacking in activity?
I remember in the initial excitement of setting up the website, a large number of communities were set up that had widely intersecting audiences. If people are going to post something, they're going to post it once (generally), and if they're going to post it once, they're going to post it to the more popular relevant community. Communities rarely get deleted, so now we have a lot of dead ones.
(this reminds me of a very old reddit post where someone complains about the introduction of communities and said that reddit should have gone with a post tagging system instead so that one post could be followed by multiple "comms")