the spamming factors of link donors, which you measure by the number of external links in link building, have NOTHING to DO with The actual Google score. Distortions of your understanding of PageRank transmission issues are monstrous Links to external resources can be regarded as an extension of semantics. For example, a link to a Wikipedia article EXPANDS the semantics of your page. The semantics of the wikepedia page are glued together with the semantics of your page if you specified target="_blank"in the link attribute. This is how you show The Google algorithm that you do not want to let the user leave your page and use the link to provide evidence of your own claims or necessary additions to it. Therefore, in this design, Google's ranking algorithm perceives the external link differently. The emphasis and weight of existing keywords on the page are changed, and their relevance is changed.