High PR Social Bookmarking Sites

• http://www.socialmaximizer.com/#self
• http://www.vmoptions.com/social-networking-list.php
• http://www.sparkinfosys.com/free-bookmarking-list.html
• http://getfreelists.com/lists/bookmarking_sites?page=2
• http://8biits.com/seo/dofollow-social-bookmarking-pligg-sites-list-2012/
• http://www.seomanualsubmission.com/do-follow-social-bookmarking-sites.php
• http://www.myseoresources.com/list-of-social-bookmarking-sites-2/
•  http://socialbookmarksites.in/lists/sites/all/all/date/desc/?ref_=clicksor
• http://stephanmiller.com/my-link-lists/124-taggingsocial-bookmarking-sites
• http://website-submissions.blogspot.com/2013/11/top-100-social-bookmarking-sites-list.html