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Tactical guides, comparisons, and case studies to help self-published authors rank for the right keywords, sharpen their listings, and turn browsers into buyers.

Underserved Kindle Genres: What Readers Buy vs What Authors Publish

We mapped about 400 Kindle fiction categories and compared what the #50 book sells with how many new English books arrived in 90 days. Three genres looked open, two that keep getting called underserved were crowded, and one had great numbers held by a single author.

Book Metadata & Keywords · Oct 21, 2026 · 12 min read

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Can Amazon Detect AI in Your Book? What KDP Actually Checks

Amazon has not published any AI detection for KDP books. What it does ask, why detectors misfire, what we found running the same texts through four of them, what AI watermarks can and cannot show, and how authors have actually been caught.

KDP · Oct 21, 2026 · 10 min read

KDP AI Disclosure: What to Declare in 5 Common Cases

Amazon's AI question turns on who created the content, not which app you opened. Five common workflows (editing AI text, AI editing your text, brainstorming, AI covers and AI translation) checked against KDP's own definitions.

KDP · Oct 21, 2026 · 8 min read

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