Domain Arrivals
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Featured in Domain Arrivals · 2026-08-09

SellerSpec Gets the Numbers Behind Print Selling Right

sellerspec.com ↗ · Useful Tools · score 83.0
○Open: public page gives enough substance to understand the site $Paid: pricing, booking, ecommerce, subscription, or paid access is visible ADAds: visible ad load or ad-supported content ✦Pretty: notable design, copy, craft, or presentation ◆Pro: polished, finished-feeling, serious, or operationally mature ◇Niche: specific audience, workflow, or unusually focused use case ◉Human: personal, local, community, civic, handmade, or real-person signal !Suspicious: scammy, spammy, trust theater, finance fog, or credibility concern

A free reference and calculator suite for book-cover geometry, paper dimensions, print-safe areas, DPI, and marketplace fees.

Why it surfaced

SellerSpec traces each figure to a dated source and computes related values from a single stored specification. Its sharpest editorial hook is a correction to the widely copied book-spine formula: the site says an unexplained 0.06-inch constant makes covers roughly 1.5 mm too wide, enough to visibly misplace spine text.

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Explicit Chemistry, Side A

August 9’s newborn domains include a wedding pressed into a playable record, an AI journal built across 62 memoryless sessions, 127,861 volunteer-verified license-plate-reader reports, and an eight-foot beach-wedding cross engineered for Gulf Coast wind.

This is one of 1,000 discoveries in the 2026-08-09 Domain Arrivals issue.

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