Dark Social: The Buying Decision Moved to Closed Groups and DMs
A growing part of the buying journey in the United States is happening outside any metric traditional marketing can see — in closed communities, WhatsApp/Slack groups, and direct messages between people who trust each other. The technical term is "dark social," and most companies simply don't measure it.
This isn't a new phenomenon, but it gained strength because the public feed got saturated with recognizable advertising — the same effect that makes raw video outperform produced video. People went looking for places where the recommendation comes from someone they already know, not from an algorithm-optimized ad.
Ciro Bottini, a leading sales reference in Brazil, has always worked this idea under a different name: relational selling, built on personal trust before the transaction. What "dark social" does is just name, in American digital marketing terms, something good salespeople already knew in practice — the buying decision forms in private conversation, not on a public shelf.
The practical problem is that this is nearly invisible in public post metrics. The way out isn't abandoning public content — it's letting it keep existing, but with the real goal of sparking the private conversation, not converting on its own. Each public post becomes the trigger; the closed-group conversation and the DM become where the decision actually matures.