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What 10,126 pages of marketing copy look like under a deterministic writing ruleset: which patterns show up most, what the score actually measures, and how a rule-based checker differs from an AI detector.

the ruleset

Why “” makes landing page copy sound AI-written

A quarter of the sites we rescored use “”, and pages that do are far likelier to carry other stock words beside it. What the word signals, where on a site it clusters, and what to put in its place.

guide

What makes a website sound AI-written: every pattern, and how often each appears

Sixteen structural patterns and 98 words, each with how often it turned up across 80 real sites and what fixes it. Why a single hit proves nothing, and where to start.

the ruleset

AI words to avoid: all 98 words and phrases that make copy sound generated, ranked by real use

Every word and phrase SiteTell flags, grouped by what it does in a sentence and ranked by the share of 80 real sites using it. The famous ones are rarely the common ones.

the ruleset

Em dashes and AI writing: what 11,224 flagged sentences show

The em dash rule fired on 63% of the sites we rescored, and homepages carry it at 5.6 times the blog rate. How the threshold works, what is exempt, and why we kept the rule after considering retiring it.

the ruleset

: the sentence pattern on half the sites we scanned

Negative parallelism appeared on 40 of 80 rescored sites, after a month in which our own scans could not see it. The four shapes the rule catches, where it clusters, and how to rewrite it.

the ruleset

Does using “” mean AI wrote it?

The most famous AI word appears on 13% of the sites we rescored, well behind plainer words. Why it still earns its flag, where it produces false positives, and why no single word should settle the question.

comparison

GPTZero alternatives: four detectors, and what to use when authorship is not the question

Four AI detectors compared on what each one outputs, what it accepts, and the false positive rate it publishes. Plus what to reach for when you already know who wrote the copy and want to know why it reads generic.

comparison

SiteTell and Hemingway: readability, register, and which one catches what

Hemingway grades how hard your writing is to read. SiteTell reports whether it sounds like everybody else's. Where the two overlap, where they conflict, and what our scan of 97 domains says about checking a site one page at a time.

comparison

Website copy audit tools: what each one checks, and the gap between them

Five tools compared on what they crawl and whether they read the copy itself, covering Screaming Frog, Ahrefs Site Audit, Clearscope, Hemingway plus our own scanner. Most website audit software never judges your writing, and our data shows why that gap costs large sites the most.

the data

The 13 structural AI writing tells, ranked by how often they actually appear

We scanned 97 domains and 10,126 pages with a deterministic writing ruleset. These are the 13 structural tells it checks for, ordered by the share of sites carrying each one, with what each looks like and what to do about it.

comparison

AI detectors and AI writing checkers answer different questions

An AI detector estimates whether a machine wrote your text. A writing checker tells you whether it reads as generic, and names the rule. Here is where each one is the right tool, and the data showing why the distinction matters.

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