The owner of a shadow domain is not identical with the operator of the site. The real owner of a so-called shadow domain is the search engine optimizer. This shift in ownership violates the ethical rules of search engine optimization. It is mostly applied by the "black sheep", the Black Hat SEOs. Serious problems can occur after the end of the business relationship of the business, since the SEO (search engine optimizer) are now completely free for the further development of the website. In the worst case it will automatically redirect to a competitor of his former business partner. This means of course a high business failure, with enormous losses. This is why you should avoid such a business relationship.