If we ignore the content associated with them, 4chan and other imageboards are actually a nice low-speed format for casual online interaction: the content is di

If we ignore the content associated with them, 4chan and other imageboards are actually a nice low-speed format for casual online interaction: the content is divided into threads, the board catalog can only hold some amount of active threads, threads have a finite lifespan measured by post count, threads are auto-pruned after a while, there's no secret sauce algorithm to game your attention span (catalog has simple rules for sorting by thread activity and such), visual content is limited, etc.