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https://www.adweek.com/programmatic/inside-the-deck-perplexity-is-using-to-pitch-advertisers/
https://digiday.com/media/how-axios-increased-its-pre-booked-ad-revenue-by-pitching-niche-audiences/
https://lifeofscoop.beehiiv.com/p/my-secret-newsletter-ad-sales-formula