TRUST_NO_UNVERIFIED_TRUST_BADGES
A trust seal that is a flat image rather than a link to the issuer's verification page proves nothing - anyone can save the image. Genuine seals from Norton, McAfee or a payment processor always link out to a live certificate.
Impact is importance multiplied by the confidence tier’s weight — SPECIFICATION 1.0, RESEARCH 0.7, EMERGING 0.3, EXPERIMENTAL 0.1. Two rules backed by the same class of evidence therefore always carry the same weight, which is what makes the score reproducible rather than hand-tuned.