Rankings/Card Catalog
Card Catalog
by Hana Lee Goldin, MLIS
Teaching you how to think like a librarian in the age of AI.
Free subscribers
~31k
Est. revenue
$59k – $120k / yr
Last 30 days
Mostly flat
Public estimates are rounded ranges, not exact figures. Paid plans include precise metrics, history charts, sponsor intel, and exports. Last updated Nov 2, 2026.
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Free Substats Weekly
Every Friday: breakout publications, revenue milestones, and what moved in the Substack economy. No account required.
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