Wikipedia said:In Greek mythology, Charon was the ferryman of Hades who carried souls of the newly deceased across the river that divided the world of the living from the world of the dead. A coin to pay Charon for passage, usually an obolus or danake, was sometimes placed in or on the mouth of a dead person. Some authors say that those who could not pay the fee, or those whose bodies were left unburied, had to wander the shores for one hundred years.
every link has some value in it, if G()()gle starts trying to do backend tweeks on this and that the whole web becomes silo'd. However if all your links are from this tactic it is more likely not to rank or get penalised? I don't actually believe this though, but what you do need is some authority with it. Can I ban y3lp.com et al through this? No I would most likely aid them.