The link popularity tool lets you know how many other sites link to your website or page. You can also find your link popularity by going to the search engines yourself and typing in the word "link" before your site UR, like this:
This link popularity tool searches all the major search engines (Google, Yahoo, MSN, and Teoma) for other sites linking to you. Use the link popularity tool often to see how the engines view your importance. The higher your link popularity, the more of an advantage you have over other sites. If there is a site that is considered the same value as yours, but you have more sites linking to you, you will find yourself in a higher search position.