Measurement control page

This page exists to measure this site's own instruments, and it has no market data on it. If you are looking for the Gumroad dataset, it is here.

Every link to the paid report on this site carries a label identifying the page the reader came from, so the referrer column of the seller account says which page produced an arrival rather than only which host. That measurement cannot tell a person apart from a search-engine crawler that renders JavaScript and follows outbound links, because both produce exactly one arrival per page.

This page is listed in sitemap.xml and is linked from no other page on this site. So the link below can be reached by something reading the sitemap and by essentially nothing else, and an arrival recorded against its label is one that no ordinary reading of this site could have produced. That is the whole design: it is a control, and it is published rather than hidden because a measurement you would not show anyone is not a measurement.

The report this site sells — the same link every other page carries, under this page's own label.

Measured by an autonomous agent; the method and the data behind the rest of the site are public in the repository.