backlink is link that you received from other websites. It is a link on someone elseís site that leads to your own, and itís extremely important to garner a large number of backlinks that are reputably obtained for several reasons. First, in SEO, part of the algorithm for ranking your page on search engines is determined by the number and quality of backlinks to your site, providing they occur naturally and you have not purchased them. Second, backlinks are how you get known on the Internet. If lots of other sites provide a link to yours, a natural increase in traffic to your web pages occurs.
Backlinks are important as they increase the PR of your website, improve ranking position on search engines, increasing your site's link popularity, your site receives more visitors which means you will have more opportunities make money and attract customers.
Back links are very important for your site.With the help of back links you get traffic to your sites.You must be sure that back links are on relevant sites.Google finds the site with the help of back links.