Pretending of being independent, in fact these companies represent a single gang of racketeers. They search for compromising material about various people, use Google to advertise it on the internet and demand people to pay them money for material removal. However, once someone does pay them money, the compromising material does not disappear. Instead, they just move it from one site to another, and demand people to pay them even more money. Among the victims of the racket there are also totally innocent people who were arrested by mistake, but the racketeers still demand money from them! The problem extends far beyond my personal interests, it involves a huge number of people and it can develop into a threat to the National Security. I dont believe that this kind of business one can run completely legally. Note, the websites with compromising material do not show neither their ownership, nor address, nor telephone numbers. I think, this is a sure sign that they have something to hide. I suspect, all the websites both, with compromising material and those that collect money, have hidden relations to each other. I suspect, they are controlled from one center. I also doubt that they pay taxes for the money they take from victims. I believe this is a very serious and well-organized gang of criminals.
There are several nice articles describing how this new racket industry works: