One of the important criteria for matching site user request into a search engine link popularity is. This criterion is an estimate of the number and relevance of links leading to the site other resources. Today's search engines when ranking site to give high priority link popularity. Consequently, the higher the link popularity to promote the site, the higher its ranking among search results. Link popularity and pay attention to certain directories, and in some search engines, this criterion is one of the most important, if not paramount. Link Popularity is determined by the resource number of links leading to it, and the relevance of these links. Considered relevant link leading to a resource, thematically close to promote the site. The higher the link popularity of the site that link leads to the higher significance of this reference in determining the link popularity of the promoted resource.
With an operating time of link popularity should be noted that relevant references to popular resource more valuable than tens of irrelevant links. The reason for this is that in the recent past, link popularity site solely determined number of incoming links. As a result, created a lot of incoming links from suspicious sites, as was carried out indiscriminate exchange links in order to manipulate the search engine. It should be recognized that the quantitative factor in the evaluation of link popularity is not completely lost its importance. But it should also indicate that the relevance of links is much more weight when ranking search engine site.
Thus The more important link to the page, the page is more important. Link is considered the most substantial if it leads to a related topic on the page. In addition, the more relevant reference is to the page, the more weight this reference in determining link popularity. Several important references may increase the rating to promote the site much more than a lot of irrelevant. Plays a role and build a list of outgoing links. A site with lots of outgoing links on a particular topics indicated by the search engine as a site directory. In addition, it is likely that over time this site as a source of useful links, will refer to other thematic resources. And it will help increase its link popularity and, consequently, search engine rankings. Perhaps a high-quality reference catalog is the best first step in building link popularity. Criterion Link Popularity is important to the number of relevant links leading to the promoted website. The means of this system will be reciprocal links between sites related topics. In addition, the importance qualitatively constructed a reference catalog.