“Brook Schaaf gives us a road map for content monetization through affiliate marketing that applies to countless individuals and companies. Be prepared to take notes as you read this book. Brook shares fantastic insights into affiliate marketing that will help anyone from a teen trying to monetize their videos on the FYP on TikTok to a Fortune 500 CEO.” — Shawn Collins Co-founder, Affiliate Summit

“Brook Schaaf puts a bold new spin on affiliate marketing’s role in the digital economy. His book is an accessible read that reminds us why performance-based advertising remains the best dollar-for-dollar channel most marketers still underestimate. The Affiliate Hypothesis helps answer some of the most pressing questions in digital marketing today: Why is affiliate still stuck at the kids’ table—and how do we finally change that? An absolute must-read.” — Todd Crawford Co-founder & VP of Strategic Initiatives, impact.com

“Brook Schaaf has long been one of the true north stars in affiliate and performance marketing—a leader who not only champions the industry but actually expands the way others see it. In his new book, he connects the dots across adtech, partnerships, and brand trust in a way that makes the big picture both exciting and actionable. The Affiliate Hypothesis is a timely reminder that affiliate isn’t just a channel—it’s an ecosystem shaping how brands grow and build credibility. Brook’s perspective is invaluable for anyone serious about understanding where digital growth and trust truly intersect.” — Tye DeGrange CEO, RoundBarn Labs