4 of 406 ideas

Two words — one activity, one place — and a page that lists every one of them. A hot-springs directory for a single US state does around 25,000 visitors and roughly $1,000/month; a crime-map directory does 1.3 million visitors; a pickleball court finder raised $2.5M.

A directory that helps people find addiction and mental-health treatment, monetised the way Google is — facilities pay to be on the first page — went from $300K of annual recurring revenue in 2017 to over $30M, financed almost entirely with revenue-based debt instead of equity