John Hamilton
Founder of ChatGPTAdsNow • Adtech operator • Writer on GEO, LLM Search, and ChatGPT Advertising
John Hamilton writes about how AI assistants are reshaping advertising, discovery, and customer acquisition, grounded in decades of experience across adtech, media, attribution, partnerships, and zero-to-one company building.
Why trust John’s perspective
25+ years in advertising, media, and adtech
Founder & CEO of TVDataNow, acquired by Moloco
Past roles across McKinsey, QuinStreet, Triggit, LiveRamp, and Credit.com
Published commentary and thought leadership across advertising and adtech trade media
Experience at a glance
acquired by Moloco
Areas of expertise
GEO / LLM Visibility
ChatGPT Advertising
AI-Native Media Buying
Adtech Strategy
CTV, Attribution & Measurement
Zero-to-One Business Building
Published in and featured on
Recent writing
SEO vs. AEO vs. GEO: What Marketers Need to Know Before Optimizing for AI Search
John Hamilton
Read More →Crawl, Walk, Run: A Practical AI Search and ChatGPT Ads Roadmap for Marketers
John Hamilton
Read More →Follow John’s thinking on AI advertising and GEO
Explore insights, connect on LinkedIn, or reach out to discuss AI-native media buying, LLM visibility, and ChatGPT advertising.