Backlinks are inbound links that point towards your web site or a blog (aka inward links). These links are essential in regards to search engine optimization (SEO) simply due to the fact that the more links you have pointing to your site, the better the chances of your web pages making their way to the top of search engine results (SERP).

Every search engine such as Google, Bing and Yahoo use spiders which crawl your site and analyze the information and data on them. As they crawl your pages, they also include inbound links as an important factor in their algorithm.

The way search engines see it, the more the inbound links a site has, the more popular and valuable it must be to readers. Of course these links can also help boost traffic to your website by simply having your link spread around the web in more location.