Goal: increase the number of posts that receive at least one meaningful comment. a) Define success precisely as the proportion of new posts that receive ≥1 non‑deleted comment within 24 hours of post creation; list guardrails (e.g., DAU, creator session length, abuse reports, comment quality/profanity). b) Establish the current baseline and MDE using the last 28 days; state any seasonality considerations. c) Enumerate ≥10 ideas across supply (make it easier to comment), demand (increase comment intent), matching (surface posts to likely commenters), and notifications/feeds; include risks and expected effect sizes. d) Specify data to collect (post/comment creation times, creator/commenter networks, content type, notifications sent/opened, dwell time). e) Choose your top two ideas and design experiments: unit of randomization, network interference handling (e.g., cluster randomization by poster or community), ramp plan, power assumptions, guardrails, and spillover diagnostics. f) Outline how you’ll attribute lift (incremental commenters vs shifted comments), monitor abuse/quality, and decide ship/no‑ship.