word-of-mouth-marketing
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The Handshake That Books $27 Billion a Year
One member per trade, one meeting a week, one rule: give first. Four decades on, Ivan Misner's referral club has 355,000 members in 78 countries passing each other billions in business.
Duel Tech
Duel is a London-founded B2B SaaS company that runs a Brand Advocacy Platform, helping consumer retail brands recruit, activate and scale tens of thousands of customers, creators, fans, employees and ambassadors into a measurable word-of-mouth growth channel. Founded in 2017 by adventurer-turned-entrepreneur Paul Archer and games developer Naio Tsarouchis, and certified as a B Corp, Duel powers advocacy programs for brands including Charlotte Tilbury, Lush, ELEMIS, Victoria's Secret, Abercrombie & Fitch and Pandora, and raised a $16M Series A in September 2025.