This site has a lot on it. This page puts it in order.
Everything below is free and most of it is open source. Read down the page and stop when you have what you need. If you are a small business owner trying to work out whether AI engines can see you at all, the first two links are the ones to open.
What is GEO? is the plain-English version. What the engines cite, how that differs from ranking, and the moves I ran on a real shop with the numbers attached.
The GEO and AEO FAQ gives you short answers to the questions I get asked most.
Fifteen minutes covers both. If GEO is a new word to you, open the first one.
Can AI read your store? walks you through a ten-minute check by hand. Ask the engines about yourself, read your robots.txt, test your schema, look at one page the way a machine reads it. Nothing to buy.
The AI Readiness Scanner runs that same check for you.
How a family boutique got cited 71 times in 30 days shows you the finished version on zero dollars of ad spend. That shop is my mother's, which is why I have the register logs.
Publish first and measure later and you will be guessing about your own results forever.
Set up your measurement stack in 30 minutes covers Search Console, Bing Webmaster Tools, Clarity and GA4. Every one of them free.
Which AI engines can you actually measure? is the tiering. One reports your citations, one reports impressions, three report nothing at all.
Five AI engines side by side tells you which crawlers each one runs and exactly what each will hand back to you.
Your best local wins are invisible in your analytics explains why Shopify files 98% of my mom's orders as direct traffic, and the register-log fix that costs nothing.
It was never hallucination covers what these engines are doing when they answer a question about you, and why the structure of your page decides whether they get it right.
I tried three ways to hide AI writing and all three failed is 696 blind runs and two commercial detectors. Hiding your drafts fails. Editing them measured 22 out of 22.
HUMANIST is the free checker from that study. Its negative results are published next to its wins.
Inkwash pulls invisible characters and machine typography out of finished prose inside your browser. Nothing you paste leaves the page.
All MIT licensed, source on GitHub, and I will never ask you for anything to use them.
Side projects is the index of the whole set.
Bangermeter scores X posts with the ranking weights X published itself. The study behind it found that every viral number going around was wrong.
Assay grades a business on AI readiness from their own page source, then refuses to build the outreach packet until you confirm each check by hand.
About is who I am, what I have run, and what I will not claim.
rlenk is the same person a decade earlier, for anyone who searched that name and found a stranger.
Services is $75 an hour in Pittsburgh and the counties around it, running the work on this page for people who would rather not.
Contact reaches me directly. Good questions tend to become articles.