A measure of the quantity and quality of sites that link to your site.
Information
Link popularity is an example of the move by search engines towards off-the-page-criteria
to determine quality content. Off-the-page-criteria adds the aspect of impartiality
to search engine rankings, as citations from other authors in the Web community helps
define a site's reputation. In theory, great sites will naturally attract many links,
and content-poor sites will have difficulty attracting any links.
Link popularity assumes that not all inbound links are equal. For example, an
inbound link from a major directory carries more weight than an inbound link from
an obscure personal home page.
