As far as i have experienced, there are 3 things that counts most when you want your website to be on number one pages of major search engines for specific keywords.... > Dofollow Links from Variety of Sites -- Forum Profiles, S.Bookmarking, Niche Blog Commenting, Directories etc ... This way, the Link juice is properly passed. > High PR : You need to build backlinks from High PR Authority sites so that your backlinks get good credits. > Relevancy : If you are thinking to put a link on a site that is totally in an irrelevant niche then stop!! Relevancy counts the most sometimes in website ranking algorithms... Summary : 5 High PR Dofollow Revelant Backlinks are better than 50 Nofollow Irrelavant Backlinks from PR 1/2 sites. Hope this will help the new website owners who are confused in Nofollow/Dofollow or either PR 0 backlinks are good or not.. Comments will be appreciated.