Second Brain

Latent Demand: How Facebook Marketplace Was Born

The Story

Boris considers “latent demand” the single most important principle in product. The idea: you can never get people to do something they don’t already do. But you can find the intent they already have and build a better path for it.

At Facebook, Boris observed that 40% of posts in Facebook Groups were people buying and selling stuff. Groups weren’t designed for commerce. There was no checkout, no payment system, no product listings. But that’s what users were doing anyway, hacking the product for a purpose it wasn’t built for.

That observation led directly to Facebook Marketplace. First there were Groups. Then buy-sell groups appeared organically. Then Marketplace was built as “a natural extension of the same intent that people had.”

The same pattern played out with Facebook Dating. The observation: roughly 60% of profile views were people of the opposite gender who weren’t friends with each other. People were already using Facebook to check each other out. Facebook Dating just formalized the behavior.

Boris’s framing: “Design a product that can be hacked. It can be abused by users a little bit. Then look at the data, see how they’re abusing it, and build a product around it.”

Lesson for Creators

Don’t ask your audience what they want. Watch what they already do with what you’ve given them. The workaround IS the market signal. If your followers are using your free content in unexpected ways (screenshotting your posts for reference, sharing them in DMs, asking the same question repeatedly), that’s latent demand. Build the product around the behavior that already exists.

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