I only use the Active threads link, but I also think sections of this forum "die" or stay relatively ignored because a lot of people might do what I do -- see the most recent threads through the Active link and not really wander from there.
It's like being in a giant room with 43 different alcoves - difficult to navigate and I personally lose interest in checking everything. It seems like things might be livelier with subjects more grouped, for example:
History, science, politics, economics
Arts, dreams, culture, news
Self-knowledge, philosophy, morality
Forum/FDR-related (could include meet and greet/intros)