Strategy question
You are the PM of Facebook Shops. You see the items sold per week is up but the number of messages on Marketplace is down. How would you evaluate this tradeoff?
- Meta
- Strategy
- Hard
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What this question tests
Judgment in interpreting two metrics moving in opposite directions and deciding whether it represents a real problem.
How to approach it
- Confirm both numbers are accurate and check the time window, since a short-term dip could be seasonal or a data artifact.
- Consider a benign explanation, buyers now message sellers less because listings have gotten more detailed, reducing the need to ask questions before buying.
- Consider a concerning explanation, sellers are being bypassed or communication is moving off-platform to avoid fees.
- Segment the data, check whether the decline is concentrated in high-value categories where pre-purchase questions matter more.
- Decide based on evidence, if buyers are converting fine without messaging, this may be a positive efficiency signal, not a problem.
- Define a metric to monitor going forward, post-purchase dispute or return rate, to catch cases where the lack of messaging led to a bad transaction.
What a strong answer includes
- Resists the instinct to treat the decline as automatically bad and considers a benign, efficiency-driven explanation first.
- Segments the data by category and price point, since the interpretation likely differs for a $20 item versus a $500 item.
- Names a concrete risk to check, off-platform communication to avoid fees, which is a real business concern.
- Proposes a downstream metric, dispute or return rate, to determine if the messaging drop is actually hurting transaction quality.
Common mistakes
- Assuming the messaging decline is automatically bad without considering it might reflect improved listing clarity.
- Not segmenting by category or price point before drawing a conclusion.
- Ignoring the possibility that communication moved off-platform.
Likely follow-up questions
- How would you tell if communication moved off-platform.
- Would you intervene here, and if so how.
- How would you segment this analysis further.
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Learn the skill behind it
Chapters of the AI PM course that teach what this question tests.
- Chapter 4: Discovery and strategy for AI products
- Chapter 9: Prove it paid off: outcomes, economics, and pricing
- Chapter 14: Get the job: the AI PM interview loop