logicScripts.com's Link Popularity
Link popularity is a PERL script designed to check the total number of web sites that link to your site. Because good link popularity can dramatically increase traffic to your web site, well placed links are an excellent source of consistent and targeted traffic. And due to recent developments, they can even generate additional search engine traffic to your site. Most of the major search engines now factor Link Popularity into their relevancy algorithms. As a result, increasing the number of links to your site can actually improve your search engine rankings.