🎟 Live Show at UNSW – May 29

Catch Georgie and Andrew McCarthy (Head of APAC at Notion) live in Sydney 👉https://bit.ly/BAI-LiveEvent

Millie Marconi is the founder and CEO of Yesterday, and the creator of Test Feed, a breakout AI tool that lets users preview how their content will land with a synthetic audience before posting it online. In this episode, Millie shares the story behind building Test Feed after a viral LinkedIn post backfired and sparked a personal reckoning around reputational risk.

We explore how synthetic audiences are making elite-level brand testing accessible to everyday founders, why building in public is both terrifying and empowering, and what non-technical founders can bring to the AI table. Millie also opens up about her nomadic lifestyle, her favorite AI tools (Claude and Gemini, anyone?), and the unexpected upside of being “canceled.”

02:25 – What Millie’s Building: Yesterday & Test Feed

04:52 – Why Synthetic Audiences Are a Game-Changer

06:14 – The Demo That Went Viral: Over 800 Signups

07:58 – How a Personal Misstep Sparked the Idea for Test Feed

10:43 – Who Test Feed Is For: Founders, Content Creators, and Social Media Managers

13:11 – Building in Public vs. Stealth Mode

16:48 – Female Founders, Visibility & Vulnerability

19:52 – What Non-Technical Founders Bring to the AI Era

22:45 – Integrating AI into Test Feed as a Non-Technical Founder

26:20 – AI Tools Millie Loves: Claude, Cursor, Gemini, and More

33:43 – Just Play: How to Get Started with AI Without the Overwhelm

36:06 – Digital Nomad Life: Lessons From 2.5 Years on the Move

42:17 – Rapid Fire: Guess That Cringe Tweet (Trump vs Elon Edition)

🙋‍♀️ Follow Millie on LinkedIn - https://www.linkedin.com/in/millie-marconi/

💼 Yesterday Testfeed - https://yesterday.work/

🧵 Millie’s LinkedIn Post on “Masculine Energy” - https://www.linkedin.com/posts/millie-marconi_after-interviewing-100-hr-leaders-about-activity-7284745207923781632-QU-X?utm_source=share&utm_medium=member_desktop&rcm=ACoAACb9cQIBMRvkSzVlzjznYUqzAEsWp-Q5zBo

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PMB Trailer

PMB Trailer