External link (backlink)

External link
(called backlinks, incoming link, inbound link, inlink, inward link) -
this term is understood as external inbound links leading to that page
from another site. The page where the link is placed to the linking page, and the page to which the link leads to a page of links. Incoming External links are an effective tool in the process of positioning the page.
The quantity and quality of incoming links with anchor texts of the
external factors influencing the increase page ranking, so-called
off-site activities. The parameters relevant for the positioning of pages. Inbound links play an important role in the positioning of websites. To increase page rank in the search results of greatest importance have the following inbound links:

• number - the more incoming links leading to the page, the higher it will appear in search results.
  Note, however, that the links should be posted on the pages of valuable
  services designed to give Internet users and with content of a similar
  to the linked page.


• 
  quality maintainable pages - pages maintainable quality parameters
  affect the way inbound links and its position in the search results.