Now days, ‘link popularity’ is the talk of the town in the search engine optimization community.
Link popularity is: the search engines have decided that if other sites are linking to your site, it must be a winner, therefore it deserve a boost in rankings. People wants to link with good sites, not bad ones.
Most of the search engine emphasis on link popularity in their ranking algorithm. Some are believe that the number of sites pointing to your sites is determines your link popularity and the more links, the higher your ranking will be. The search engines are not dumb. They are used to search engine spammers trying to cheat their way into getting a high ranking. Because of this, the search engines are not just looking for the number of links that point to a site, but the quality of those links.
The concept is rather simple… The SE Spiders, or ‘bots,’ are constantly scanning the net. When they crawl your site they interpret a link from page A to page B as a vote, by page A, for page B. This holds especially true with Google.
It is important to link to related sites. There are two types of links that get factored into the link popularity equation. links from other sites that focus on the same keyword phrases your site focuses on, and links from relevant categories in major directories and industry specific portals. links from sites that focus on topics that have nothing to do with your site probably won’t help you win any link popularity contests, either.