Almost nothing.
This is a static site. There is no account to make, no form to fill in and no database behind it.
What is collected
No analytics, no cookies, no local storage and no third-party scripts. Nothing on this page runs after it has loaded.
The server records ordinary web server logs — the request, the time and the response code — which are kept only long enough to notice something being broken or abused.
The one request that leaves this domain is for the webfonts, which are served by Google Fonts. That request tells Google your IP address and which font files you needed. If that is not acceptable for your deployment, the fonts can be self-hosted; the repository documents how.
Getting in touch
Questions about any of this, or about anything else on the site, go to holler@micahnolte.com.