The Zerg publication

Follow the evidence.

Research, technical guides, and observations from inside the search system. Start with a question. See where the data leads.

Published research

On the research desk
01

Why Google Crawls a Page but Doesn’t Index It

Forthcoming
02

The Technical SEO Signals Hiding in Your SERPs

Forthcoming
03

How to Diagnose a Sudden Organic Traffic Drop

Forthcoming
04

What Large Sites Get Wrong About Internal Linking

Forthcoming
05

How to Build a Search Data Pipeline

Forthcoming
06

When a 200 Status Code Isn’t Enough for SEO

Forthcoming