What is Backlink

Backlinks are incoming links to
a website or web page. Inbound
links were originally important
(prior to the emergence of
search engines) as a primary
means of web navigation;
today their significance lies in
search engine optimization
(SEO). The number of backlinks is
one indication of the popularity
or importance of that website
or page (though other
measures, such as PageRank, are
also considered to be
important). Outside of SEO, the
backlinks of a webpage may be
of significant personal, cultural
or semantic interest: they
indicate who is paying attention
to that 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 [1]. Backlinks are also
known as incoming links,
inbound links, inlinks, and
inward links.