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Thompson’s Law - Viral Is Just Broadcast

The Story

Tom’s first and foundational viral marketing law cites Derek Thompson: “Posts don’t simply ‘go viral’. Huge accounts make them viral.” (Source 1).

The mental model most creators have is wrong. They picture content spreading person-to-person like a virus. “But it actually explodes when one ‘mega-account’ blasts it to their massive audience.” (Source 1).

The supporting research: “Thompson studied this by tracking popular content backwards. He found that what we call ‘viral’ is usually just ‘broadcast’ - one source with a huge platform sharing to millions at once. True person-to-person viral spread? Almost never happens.” (Source 1).

The strategic implication: “Stop trying to get 1,000 regular people to share your content. Instead, make a list of 10 people with huge audiences in your space. Study what they share, then create content specifically designed to make them hit ‘repost’.” (Source 1).

The other 12 laws Tom presents (Purple Cow, Golden Hour, Anti-Polish, Law of Shitty Clickthroughs, Gladwell’s Law, Me-First, Expertise Curse, Matthew’s Advantage, 90-9-1 Rule, Shareability Spectrum, Post-Purchase Rationalization, Reactance) are all framed as ways to make the broadcast happen — increasing the odds that one of those 10 mega-accounts hits repost (Source 1).

Tom’s specific tactic for one of these laws (Golden Hour): “Treat big posts like product launches. Schedule them when your team is online and ready to engage immediately. Create a WhatsApp group with 5-10 friends who can comment within the first hour. The algorithm doesn’t care about quality. It cares about momentum.” (Source 1).

Lesson for Creators

Most “go viral” advice is built on the wrong model — that good content spreads like a chain reaction through normal users. The actual mechanism is single-source amplification: a mega-account picks up your content and broadcasts it. This shifts where you spend your time. Instead of optimizing every post for “shareability,” you build a small list of accounts who could amplify you, study what they share, and engineer content for that single moment of reposting. The 90-9-1 rule (1% create, 9% engage, 90% lurk) is the same insight at the platform level: most reach comes from concentrated sources, not distributed ones. Tom’s WhatsApp group of 5-10 friends commenting in the first hour is the same logic at the algorithmic level — momentum is concentrated, not democratic.

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