Black hat SEO is endlessly fascinating phenomenon to study. This post is about some tactics they use to make their sites rank higher. The goal of blackhat SEO is to boost the search engine ranking of a page nobody particularly wants to see, usually ePharma, escort services, online casinos, shitcoins, hotel bookings; the bermuda pentagon of shady websites. The theory behind most modern search engines is that if you get links from a high ranking domain, then your domain gets a higher ranking as well, which increases the traffic. The reality is a little more complicated than that, but this is a sufficient mental model to understand the basic how-to.