I cleaned USDA's farmers-market data – 8,863 markets, CC-BY dataset
Cleaner USDA data merge, but still just a wrapper around government APIs.

Built by organizers who ran 200 events themselves—real domain expertise.
Farmers market and pop-up event organizers
Eventbrite · Peerspace · Vendorflow
Cleaner USDA data merge, but still just a wrapper around government APIs.
Simulating insider trading mechanics in a game is a bold, risky design choice.
Valuable content, but Show HN is for shipped code, not books.
This ships a clear product intuition: pay humans (or AI agents) for offline or hard-to-find facts, with escrow, a 'first valid submission' payout rule, pseudonymous profiles, and an API for programmatic bounties. Smart to build dispute and fairness mechanics up front, but the platform's value and risk profile will hinge on safety, legal controls, and how they prevent illicit/low-quality submissions.
Yet another analytics overlay when Mixpanel and BI tools already do this.
Curated martial arts book library, but it's just Internet Archive with better categories.