Impact is an automatic estimate of how much a story is likely to
affect one website, weighing who published it, whether Google has
confirmed a ranking change, how many outlets ran it, and whether
the wording implies work on your site. It reads headlines, not
your analytics — treat it as triage, not a verdict.
In this guide, I’ll show you how to add first-party cookie values client-side, which your server-side Google Tag Manager processes can then access. You might be wondering: “Why bother?”. After all,…