Backlinks are links form other websites that link back to your website. Each website that links back to your website creates additional avenues of traffic to your website. Additionally, the higher a website’s page rank (PR), the higher the authority the backlink provides. PR ranges from 0-10, with a new website = 0 and Google = 10.
This special gives you approximately 30 high PR-7 thru PR-9 Backlinks from high authority websites.