[adambard]

I run a Reddit post scheduler (https://laterforreddit.com/), and I have noticed a substantial bias towards posting in various adult subreddits.

I suspect in my case that this has a lot to do with how people who are browsing porn use Reddit, versus how people use the rest of the site at large. Most subs moderate posts and discussion actively and have norms (and moderators) that act against posting frequently, cross-posting and self-promotion. On the other hand, most porn subreddits are quite happy to accept x-posts, self promotion, etc, because their goal/approach is to provide more porn faster.

This seems to be an emergent property of Reddit rather than a deliberate strategy, but they seem happy enough to keep the revenue coming (as am I).