Product design question

Improve Facebook comments.

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What this question tests

Whether you can find a specific weakness in a mature, well-known feature and propose a targeted improvement.

How to approach it

  1. Clarify what is being improved: comment quality, engagement, or moderation, since Facebook comments already has broad usage.
  2. Identify the core pain point: low-quality or toxic top comments burying thoughtful replies, especially on public posts.
  3. Segment by context: comments on a friend's post behave differently from comments on a public page or viral post.
  4. Prioritize ranking quality on high-traffic public posts, where toxic or spam comments do the most damage to experience.
  5. Propose a concrete change: better comment ranking that weighs relevance and reply quality, plus lightweight tools like comment filters for owners.
  6. Define success metrics: rate of meaningful replies to top comments, with a guardrail on reports or hidden comments.

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