A plug-in. Trusted users thumbs up/down sites and ratings are recorded in a database. The plug-in visually differentiates shite links (according to database) so

A plug-in. Trusted users thumbs up/down sites and ratings are recorded in a database. The plug-in visually differentiates shite links (according to database) so others can avoid clicking on them (or they can hide them altogether). A kind of PiHole for just shitty SEO sites.