Ground Truth

Writing

Notes on product data and what AI answers get wrong about it.

Generative engine optimization: get your product facts right

What GEO means in Google's own words, how to get into AI answers, and how to check and fix what those answers say about your products.

Shopify compare-at price not showing? Check the variants

Two in five are a variant whose compare-at box is not empty at all. We counted 5,444 products on sale across 18 Shopify shops, then opened the pages.

Check your product schema in five minutes

Two commands that show whether your product pages carry a machine-readable record, and what broke on 23 real Shopify stores across 136 measured pages.