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'Backlinks' are incoming links to a website or web page. The number of backlinks is an indication of the popularity or importance of that website or page. In basic link terminology, a 'backlink' is any link received by a web node (web page, directory, website, or top level domain) from another web node (Björneborn and Ingwersen, 2004). Backlinks are also known as 'incoming links', 'inbound links', 'inlinks', and 'inward links'.
Search engines often use the number of backlinks that a website has as one of the factors for determining that website's search engine ranking. For example, Google's PageRank algorithm uses backlinks to help determine a site's rank (the Google Toolbar can be used to view the PageRank of a web page). Therefore, websites often employ various techniques (called search engine optimization) to increase the number of backlinks pointing to their website.
Most commercial search engines provide a mechanism to determine the number of backlinks they have recorded to a particular web page. For example, Google can be searched using (or ) to find the number of pages on the Web pointing to http://wikipedia.org/.
Google frequently only shows a subset of all existing backlinks to a web page [1], possibly because of the network costs of providing this information and to avoid exposing the inner-workings of their ranking algorithms. Yahoo!’s Site Explorer and Microsoft's Live Search may give more accurate backlink counts. Google has recently added a new webmaster tool which allows webmasters to view more backlinks to their websites [2].
When HTML was designed, there was no explicit mechanism in the design to keep track of backlinks in software, as this carried additional logistical and network overhead. While Google does keep track of some HTML backlinks, the data can be delayed by hours or months, and backlink data is not kept for pages that Google doesn't watch, such as password-protected areas or dynamic pages.
Some website software internally keeps track of backlinks. Examples of this include most wiki and CMS software.
Other mechanisms have been developed to track backlinks between disparate webpages controlled by organizations that aren't associated with each other. The most notable example of this is TrackBacks between blogs.
★ Google bomb
★ Link popularity
★ PageRank
★ Search Engine Optimization
★ Link Farm
★ Link bait
★ Toward a Basic Framework for Webometrics, Lennart Björneborn and Peter Ingwersen, , , Journal of the American Society for Information Science and Technology, 2004
| Contents |
| Search engine rankings |
| Obtaining backlinks from search engines |
| Technical |
| See also |
| References |
Search engine rankings
Search engines often use the number of backlinks that a website has as one of the factors for determining that website's search engine ranking. For example, Google's PageRank algorithm uses backlinks to help determine a site's rank (the Google Toolbar can be used to view the PageRank of a web page). Therefore, websites often employ various techniques (called search engine optimization) to increase the number of backlinks pointing to their website.
Obtaining backlinks from search engines
Most commercial search engines provide a mechanism to determine the number of backlinks they have recorded to a particular web page. For example, Google can be searched using (or ) to find the number of pages on the Web pointing to http://wikipedia.org/.
Google frequently only shows a subset of all existing backlinks to a web page [1], possibly because of the network costs of providing this information and to avoid exposing the inner-workings of their ranking algorithms. Yahoo!’s Site Explorer and Microsoft's Live Search may give more accurate backlink counts. Google has recently added a new webmaster tool which allows webmasters to view more backlinks to their websites [2].
Technical
When HTML was designed, there was no explicit mechanism in the design to keep track of backlinks in software, as this carried additional logistical and network overhead. While Google does keep track of some HTML backlinks, the data can be delayed by hours or months, and backlink data is not kept for pages that Google doesn't watch, such as password-protected areas or dynamic pages.
Some website software internally keeps track of backlinks. Examples of this include most wiki and CMS software.
Other mechanisms have been developed to track backlinks between disparate webpages controlled by organizations that aren't associated with each other. The most notable example of this is TrackBacks between blogs.
See also
★ Google bomb
★ Link popularity
★ PageRank
★ Search Engine Optimization
★ Link Farm
★ Link bait
References
★ Toward a Basic Framework for Webometrics, Lennart Björneborn and Peter Ingwersen, , , Journal of the American Society for Information Science and Technology, 2004
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psst.. try this: add to faves
