document.referrer), then click Run Code. With SEO: true and no media-source key on the landing URL, the script maps the referrer to a *_organic_seo pid and stamps af_channel=seo. Paid signals (gclid, gbraid, wbraid, utm_source) skip SEO and fall back to defaultValue.
document.referrer. This field writes the same store Smart Script uses (ss_webReferrer) so you can try search-engine hosts. Production sites do not need this field — the library reads document.referrer on load.