Black Hat SEO techniques involve using different online marketing techniques that aim to improve the brand logo design's SEO positioning of sites, going against the rules and guidelines of search engines. These are dark and fraudulent techniques. 

Although it allows us to climb to the top positions of the search engine ranking sooner than expected, they do not contribute anything of value in improving the user's browsing experience.

This is because they are not designed to improve the usability of the web and hurt our brand and its ethics, being often "hunted" by search engine robots and penalized by them as a result of their use. 

A good Webmaster should never use them in favor of quality positioning, instead of using those that favor offering quality and valuable content, an intuitive design for the user, a well-structured HTML code, and correctly optimized meta tags, as well as microformats that describe the content of the pages.