External links

External links are links indicating on a site from the outside. They are one of PR increasing ways. Other way is pages addition within a site. Entering links have quite big number of estimation criteria. We will consider most important of them:
Quality of the entering link is a measurement of key elements on page containing the entering link which influence link reputation in a certain combination.
Relevance of the entering link is a characteristic measurement of theme relevance (conformity degree between the desirable and really received information) and a key phrase in content on the page containing the entering link.
The quantity is the criterion having still the big force in combination with resources quality referring to your site.