NON CONNU FAITS SUR STRATéGIE SEO

Various strategies to manipulate PageRank have been employed in concerted concours to improve search results rankings and monetize advertising links.为了处理那些“没有外部链接的页面”（这些页面就像“黑洞”一样吞噬掉用户继续向下浏览的概率）所带来的问题，我们假设：这类页面链接到集合中