The creative does 80% of the work, not the targeting: a scroll-stopping hook, one clear promise, and a landing page that keeps the exact promise the ad made. Test many cheap creative variations rather than obsessing over audience settings. Write for the customer's pain, not your feature list.
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A blunt, practical guide from Demand Curve's founder on which paid and organic channels fit which business, and why most startups can't profitably buy ads early on.
The practitioner's manual for running a high-tempo growth process, testing acquisition, activation, retention and referral, from the coiner of 'growth hacking'.