12-31-2019, 05:03 AM
In today's world where search engines can identify low quality or spammy links. It is extremely difficult for anyone to give his or her competitor a penalty by creating naughty links. Unless they are using some kind of automated or bot configured program to generate links. Which again sooner or later will be identified and removed all at once by the search engines. So, keep the hypothesis in books and work in the real world.