Its important to get quality backlinks for website or blog but how to get? There are many techniques for getting backlinks. After Google Penguin 2.0 update many teechnoques are not beneficial but blogging and blog commenting on high pagerank and do follow blogs as a technique is beneficial here. Everyone’s Know the important of Do follow link with high page rank blogs. When you comment on blog please make sure you read the article and then comment if you have anything to share. But for that good blogs list is required with Commentluv Enabled(CommentLuv is actually a plugin for wordpress or widget for blogger for websites that fetch the latest post from comments blog and place it below the commenter comment) for better result.

20 Do Follow Blogs with Pagerank 2-6 and Commentluv Enabled
So what are you waiting for? Go with the given list and get dofollow links from commenting on the blogs listed. 

http://www.currybet.net
http://blog.greens.org.nz
http://www.sirpi.org
http://www.gadgetalks.com
http://www.technotwinkle.com
http://techchunks.com
http://www.carlgalloway.com
http://technogiantz.com
http://filipinolibrarian.blogspot.com
http://blog.lendingclub.com
http://www.technoloverz.com
http://pintini.blogspirit.com
http://marlenescorner.blogspirit.com
http://www.themallblog.com
http://www.socialtimes.com
http://weblogtoolscollection.com
http://www.themallblog.com
http://links.org.au
http://blog.mofuse.com
http://www.revealingthestuffs.com

List of few high PageRank commentluv blogs:

http://www.zigpress.com/
http://freebloghelp.com/
http://www.currybet.net
http://www.intenseblog.com
http://gaming.psu.edu/
http://freebloghelp.com/
http://www.bloggingjunction.com/
http://www.stayonsearch.com/
http://www.problogger.net
http://www.basicblogtips.com
http://www.socialtimes.com
http://keepupwiththeweb.com
http://www.technikant.com
http://www.techlila.com
http://www.blogussion.com
http://kikolani.com
http://www.seobythesea.com
http://www.zigpress.com
http://gaming.psu.edu
http://www.techpatio.com