Improve the Link Popularity of Your Site
http://www.1stsearchranking.com/link-popularity.htm

Roy, Sumantra
1stSearchRanking
2003

Abstract:

Link popularity, i.e. the number of sites which are linking to your site, is an increasingly important factor as far as search engine placement is concerned. Other things remaining the same, more the number of links to your site, higher will be its ranking. What is important is not only the number of links to your site, but also the types of sites which are linking to you. A link from a site which is related to yours is more valuable than a link from an unrelated site.