Personality quizzes (lead-gen + identity)
The classic "What kind of [X] are you?" play. 5-10 lifestyle questions, an email gate, a personalized result. The single highest-converting lead-magnet format on the consumer web.
The structure: 5-10 multiple-choice questions ("Pick your morning routine," "Which of these places sounds most like home"), each tagged to one or more result archetypes (e.g., 5 archetypes for a 5-result quiz). At the end, an email gate ("Enter your email to see your result") and a personalized result page that feels worth the trade. The result is a tiny piece of personalized content the user wants to share, which drives organic distribution.
Where this excels: virality + email capture in one motion. A well-designed personality quiz routinely captures 15-30% of cold traffic as leads (vs 1-3% for static signup forms) and 5-15% of those leads share the quiz organically. The economics — cost-per-lead, cost-per-share, lifetime value of the captured email — are a category of their own.