You are the PM at Facebook Post. What reactions should we add next?

Interesting. Okay, so I'm the PM for Post, and my goal is to identify which reactions I should add next. Just to make sure we're on the same page about reactions, I see it as a lightweight way to help users express themselves. This helps FB users in a few ways. First, it enables users who would not spend time writing a lightweight comment to express themselves on a post. Second, it makes it easier for users who were already thinking about writing a lightweight comment to express themselves faster. Finally, there is another component of reactions that is related to displaying aggregate reactions on a post, that is super useful to analyze the overall sentiment behind reactions to the post. Does this cover the full feature? Cool!

I'd also say that reactions seems super aligned with FB's goal of providing tools to build community and bring people closer together. I see the goal for the reactions feature as helping people express themselves through a lightweight tool to interact with posts. Does this make sense? Next, I'd like to cover how I would measure success of the feature. This will help answer the question of which reactions to add next.

Ok, I can think of a few metrics to achieve this goal. One type of metrics would be related to usage of the feature:

• Penetration metrics such as "# of Weekly Active Users"
  • Specifically, I'm thinking about the number of users who used at least a reaction during a period of a week.
  • And a week, because:
    • Daily would be too limiting in that some users only use FB some days of the week, and there might be specific patterns not representing the full user base on a given week.
    • Monthly would be interesting, but would require us to way too long to get results.
    • Weekly seems like a good middle ground.
  • We can also normalize it by dividing it by the total FB user base just to make sure the metric is relative to the whole population.
• Rate of usage metrics such as "# Weekly Reactions per User"
  • This will provide additional visibility into the level of engagement of users with the feature.
• Counter metrics related to:
  • Cannibalization of other Posts features such as "# of Weekly Active Users of the Comments feature" given that interactions with comments might decrease given that lightweight comments will most likely be cannibalized.
  • Potential negaticve impact on Facebook overall such as "# of Weekly Active Users of Facebook"
  • Integrity metrics. On this topic, I'd like to focus on unacceptable sentiments on the platform. I would work with DS on this, but the goal is to make sure FB remains a healthy sentiment platform. One example would be "# of hate posts / comments".