There's no way to them to get that interstitial data without having code analyzed/reporting per-page on the site (either backend Apache-log analysis or somethin

There's no way to them to get that interstitial data without having code analyzed/reporting per-page on the site (either backend Apache-log analysis or something like Google Analytics). Alexa did this for a while with their "embed your site's score", but that was too easily gamed so it was discontinued as a metric source.