Dark forests like newsletters and podcasts are growing areas of activity. As are other dark forests, like Slack channels, private Instagrams, invite-only message boards, text groups, Snapchat, WeChat, and on and on. This is where Facebook is pivoting with Groups (and trying to redefine what the word “privacy” means in the process).
These are all spaces where depressurized conversation is possible because of their non-indexed, non-optimized, and non-gamified environments. The cultures of those spaces have more in common with the physical world than the internet.