Notes by khushij88: Regarding the implementation of PageRank, first of all, it is important how PageRank is integrated into the general ranking of web pages by the Google search engine.

Notes by khushij88: It has already been shown that each additional inbound link for a web page always increases that page’s PageRank.

Notes by khushij88: Since PageRank is based on the linking structure of the whole web, it is inescapable that if the inbound links of a page influence its PageRank, its outbound links do also have some impact.

Notes by khushij88: Up to this point, it has been described how the number of pages and the number of inbound and outbound links, respectively, influence PageRank.

Notes by khushij88: any experts in search engine optimization assume that certain websites obtain a special PageRank evaluation from the Google search engine which needs a manual intervention and does not derive from the PageRank algorithm directly.

Notes by khushij88: It has been widely discussed if additional criteria beyond the link structure of the web have been implemented in the PageRank algorithm since the scientific work on PageRank has been published by Lawrence Page and Sergey Brin.

Notes by khushij88: For many years now, the topic- or theme-based homogeneity of websites has been dicussed as a possible ranking criterion of search engines.

Notes by khushij88: By the end of 2001, the Google search engine introduced a new kind of penalty for websites that use questionable search engine optimization tactics