This process relies on building links that go from your site to different sites that have web 2.0 properties (Squidoo, Wordpress, Hubpages, Weebly, etc.). When unique content related to the specific niche of your website is created and submitted, you get a minimum of two backlinks to your web page. The links between your website and the other web 2.0 sites is in the form of a link. Google especially values these kinds of links for the content is qualitative.