It's because a huge selection of A large number of links can come into Perform later as Section of a tiered system. On the other hand, you only want quality, authoritative, and influential websites referring to your Principal domain. I clearly oversimplified items a great deal. Ranking #1 in https://seotoolsplagiarism75296.suomiblog.com/the-best-guide-to-buy-web2-0-backlinks-cheap-43546755