Building Single-purpose Micro-utility Websites Monetized With Display Ads, Using AI to Build and Market Them End-to-end
Originally published Sep 14, 2026 — Mr Reis
Mr Reis · I Found a Simple Stupid Way To Make FREE Money Online ↗
Give an AI a vague prompt about your own job, hobbies, and daily annoyances, and ask it to generate 20 single-purpose micro-utility website ideas ranked by likely traffic, validate real search demand for a handful of favorites in Google Trends, then have Claude Code or Google's free Antigravity IDE build and deploy the site end-to-end (including signing up for an ad network and inserting ad slots) from a single prompt, monetizing through a low-traffic-friendly ad network first before graduating to Google AdSense once traffic grows.
The presenter cites several real examples of single-purpose utility sites (a temporary-email generator, a 'weird Amazon products' site, a link-outage checker) earning $2,500-$39,000/month purely from display ads on very simple pages, and argues such sites can also be resold later at 25-40x monthly earnings; he demonstrates the entire build live, including his own previously-built metadata-removal tool as a real personal example.
Someone comfortable directing an AI coding assistant conversationally rather than writing code themselves, willing to validate an idea's search demand before building rather than guessing.
Simple utility websites monetized by display ads are a real, long-standing internet business model, and the specific named examples are genuine existing sites, though their exact revenue figures are unverified claims relayed from the sites' own founders. The video promotes the presenter's own paid 'Wealth Academy Pro' community for a prompt-injection 'skill' and free-token workaround, and separately teases a paid 'Mythos AI' tool, so those specific add-ons are sales funnels rather than required parts of the core method.