If you want a real boost in your search engine rankings you NEED high quality backlinks. Low quality links from low quality sites are less than worthless; they will actually HURT your rankings, or worse, get your site delisted,In search engine optimization (SEO) terminology it is the term used to describe the value of a Web site, where the measurement is based on the quantity of quality Inbound links (also called backlinks) to your pages. Many search engines, including Google use link popularity in its algorithm when determining where your Web site is listed in its SERP.