Google ranks page links from an Authority Site higher than others. An authority site is a central site in a community determined by counting inbound and outbound links.
a measure of the quality (in the all-powerful opinion of the search engine company) of a given site, gauged by some combination of size, importance, relevance. A link from an authority site to your own is more valuable than just any old site.
a large site that is considered to most important for its keywords
a large site that is recognized by the search engines as being the most important for its keywords
a site that is recognized as an important source of information in a particular field
A web site deemed to be an authority because a large number of other sites link to it.
A site that has many In-Bound links coming to it, and very little outbound links.
A system that would count inbound and outbound links to identify central sites in a community.
A recently coined SEO term that refers to web site judged to be important or authoritative in it's sphere of expertise due to the quality of content and features that it possesses. In term of linking strategy and SEO value, an incoming link from an authority site is worth more than an incoming link from average site.
