SEO for Solos
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Chapter 18Paid

Failure modes

How each mechanism in this playbook backfires. Over-indexation, FAQ schema treated as spam, canonical loops, key leakage, doorway classification, and a CSP that silently breaks the funnel.

5 min read · updated 2026-07-26· last reviewed 2026-07-26

Every item here is something that looked like an improvement on the day it shipped. That is what makes them dangerous: they are not mistakes of ignorance, they are the correct technique applied slightly too far or without a check.

Each one gets the same treatment: what it looks like, how to detect it, and what to do about it.

The rest of "Failure modes"

1,097 words covering 7 sections, with the implementation code for 6 checks. The table of contents below is the full outline, so you can see exactly what is behind this.

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What this chapter covers

  • Why this chapter exists
  • Over-indexation of a thin tier
    • What it looks like
    • Detection
    • The fix
  • FAQ schema treated as spam
    • What it looks like
    • Detection
    • The fix
  • Canonical chains and loops
    • What it looks like
    • Detection
    • The fix
  • IndexNow key leakage
    • What it looks like
    • Detection
    • The fix
  • Doorway page classification
    • What it looks like
    • Detection
    • The fix
  • A tightened CSP silently breaking the funnel
    • What it looks like
    • Detection
    • The fix

Checks this chapter covers

Each one has a command you can run against your own site.