Blog commenting has always been an effective strategy, not only for generating traffic but also build connections with fellow bloggers. Moreover, some blog owners have decided to make their blogs dofollow, which means that the url you leave in the comments section on the blog will be counted as a dofollow link and some amount of link juice will be passed to your own blog. So here is a list of the top 30 dofollow blogs with high page ranks (3 or more) where you can use an anchor text to link back to your blog and increase your backlinks too. However make sure that your comments make sense, otherwise they might just get deleted. Although most of the blogs in this list are related to blogging and technology, it can still benefit your site if you choose the right post on any of these blogs to comment on.
http://www.addthis.com/forum PR9
http://forum.meebo.com PR8
http://forum.joomla.org PR8
http://chronicle.com/forums/ PR8
http://forums.cpanel.net PR8
http://www.fckeditor.net/forums PR7
http://www.000webhost.com/forum PR7
http://flashpanoramas.com/forum PR7
http://pkp.sfu.ca/support/forum PR7
http://audacityteam.org/forum PR7
http://arch.designcommunity.com PR7
http://forum.filezilla-project.org PR7
http://www.awasu.com/forums PR7
http://www.hostmonsterforum.com PR7
http://forum.visagesoft.com PR7
http://forums.mysql.com/ PR7
http://forums.cnet.com/ PR7
http://forums.microsoft.com/ PR7
http://www.bookforum.com PR7
http://mathforum.org/ PR7
http://forums.photobucket.com/ PR7
http://www.gardenweb.com/ PR7
http://forums.wsj.com/ PR7
http://forums.cnet.com/ PR7
http://www.congtyinanquangcao.com/ PR7
http://www.wrensoft.com/forum PR7
http://forums.mozilla.or.kr PR7
http://www.claroline.net/forum PR7
http://message.snopes.com PR7
http://forum.maxthon.com PR7
http://gallery.menalto.com/forum PR7
http://forum.filezilla-project.org PR7
http://www.softcatala.org/forum PR7
http://forum.claroline.net PR7
http://forum.wordreference.com PR7
http://forums.mozillazine.org PR7
http://forums.spry.com PR7
http://forum.videolan.org PR7
http://forum.wordreference.com PR7
http://www.accessifyforum.com/ PR7
http://forum.developers.facebook.com/ PR7
http://forums.futura-sciences.com PR6
http://www.nhse.org PR6
http://forum.ertonline.gr/deytero PR6
http://forums.macosxhints.com PR6
http://forum.isilo.com PR6
http://www.kirupa.com/forum PR6
http://icl.cs.utk.edu/lapack-forum PR6
http://www.unla.edu.ar/foropfp PR6
http://www.archiveforum.tv PR6
http://aumha.net PR6
http://www.brooklynian.com PR6
http://germanforum.cri.cn PR6
http://guru-forum.net PR6
http://kinder.univie.ac.at/forum PR6
http://forum.whatismyip.com PR6
http://forums.foruminternet.org PR6
http://forums.phpbb-fr.com PR6
http://forums.searchenginewatch.com PR6
http://www.careerbuilderforums.com PR6
http://www.iggsoftware.com/forums PR6
http://forums.yourkit.com PR6
http://antionline.com PR6
http://forum.wordpress-deutschland.org PR6
http://sb.xrea.com PR6
http://forums.omnigroup.com PR6
http://www.antionline.com PR6
http://forums.allaboutjazz.com PR6
http://sends.hqu.edu.cn/bbs PR6
http://www.portugal-info.net/forum PR6
http://boards.core77.com PR6
http://www.city-data.com/forum PR6
http://www.ozzu.com PR6
http://www.forum.uni-hannover.de PR6
http://www.chinalanguage.com/forums PR6
http://www.textkit.com/greek-latin-forum PR6
http://forums.naseej.com PR6
http://ubuntuforums.org PR6
http://www.freewebsitetemplates.com/forum PR6
http://www.ddth.com PR6
http://www.sitepoint.com/forums/ PR6
http://w3seo.org/ PR6
http://forums.feedburner.com/ PR6
http://forums.delphiforums.com PR6
http://forums.amd.com/ PR6
http://forums.oracle.com/forums PR6
http://forums.gentoo.org/ PR6
http://forum.skype.com PR6
http://bbpress.org/forums/ PR6
http://forums.metacafe.com/ PR6
http://www.alice.org/community PR6
http://forum.boxee.tv PR6
http://forum.springframework.org PR6
http://forums.foxitsoftware.com PR6
http://www.baltimoresun2.com/talk PR6
http://www.idpf.org/forums PR6
http://www.cmsimpleforum.com PR6
http://www.htmlvalidator.com/CSEForum PR6
http://forum.parallels.com PR6
http://fhq.forumer.com PR6
http://www.forum.onlineconversion.com PR6
http://www.svetovalnica.com/klepetalnica PR6
http://www.online-literature.com/forums PR6
http://kirupa.com/forum PR6
http://forums.lablit.com PR6
http://discuss.infidels.org PR6
http://www.sitepoint.com/forums PR6
http://wysiwygwebbuilder.com/forum PR6
http://www.sosmath.com/CBB PR6
http://forums.careerbuilder.com PR6
http://www.gamecareerguide.com/forums PR6
http://3d.designcommunity.com PR6
http://forum.phpwcms.org PR6
http://forum.qgis.org PR6
http://user.services.openoffice.org/en/forum PR6
http://www.ergonomics.org.uk PR6
http://www.shatters.net/forum PR6
http://suprbay.org PR6
http://www.emaildiscussions.com PR6
http://forum.statcounter.com/vb PR6
http://phpwsforums.com PR6
http://www.envirolink.org/forum PR6
http://www.askaboutmoney.com PR6
http://forum.werk.nl PR6
http://www.prezzatech.com/community PR6
http://forums.hostgator.com PR6
http://forums.m-audio.com PR6
http://flybase.org/forums PR6
http://forums.miranda-im.org PR6
http://openebook.org/forums PR6
http://www.podcastalley.com/forum PR6
http://forum.ovh.com PR6
http://www.wysiwygwebbuilder.com/forum PR6
http://forum.utorrent.com PR6
http://www.skepticforum.com PR6
http://www.podcastalley.com/forum/ PR6
http://www.testfreaks.com/forum/ PR6
http://www.forum.spreadshirt.com/ PR6
http://www.subdreamer.com/forum/ PR6
http://www.city-data.com/forum/ PR6
http://forum.framasoft.org PR6
http://portugal-info.net/forum PR6
http://www.skyscrapercity.com PR6
http://www.thunderbird-mail.de/forum PR6
http://forum.opencube.com PR6
http://forum.yoono.com/forum PR6
http://djvu.org/forum/phpbb PR6
http://forum.german-business-portal.info PR6
http://www.booklookerforum.de PR6
http://bbs.sends.cc PR6
http://www.forumosa.com/taiwan PR6
http://www.apachefriends.org/ PR6
http://www.blackberryforums.com PR6
http://forum.corecodec.com PR6
http://forums.mtbr.com PR6
http://forums.powweb.com PR6
http://www.novosti-kosmonavtiki.ru/phpBB2 PR6
http://www.vbforums.com PR6
http://forum.teamphotoshop.com PR6
http://forum.tmj.org PR6
http://www.englishpage.com/forums PR6
http://www.gimpforum.de PR6
http://www.bautforum.com PR6
http://www.gotoandlearnforum.com PR6
http://www.teach-nology.com/forum PR6
http://www.politische-bildung-brandenburg.de/forum PR6
http://www.karriarguiden.se/forum PR6
http://forum.ertonline.gr/ertonline PR6
http://www.forum.wosp.org.pl PR6
http://forum.realitatea.net PR6
http://roundcubeforum.net PR6
http://council.smallwarsjournal.com PR6
http://www.tintucmoivn.com/ PR6
http://www.shatters.net/forum/ PR6
http://forum.avantbrowser.com PR6
http://forum.kaspersky.com PR6
http://tinymce.moxiecode.com/punbb/index.php PR6
http://forum.websitebaker2.org PR6
http://forum.springframework.org PR6
http://adblockplus.org/forum/ PR6
http://www.epilepsyfoundation.org/efforums/forum/ PR6
http://www.inkscapeforum.com PR6
http://www.cvtips.com/career_advice_forum PR6
http://www.skepticforum.com PR6
http://foxitsoftware.com/bbs PR6
http://forum.onlineconversion.com PR6
http://www.phinished.org PR6
http://forum.qarbon.com PR6
http://forum.freeforums.org PR6
http://forums.debian.net PR6
http://www.milonic.com/forum PR6
http://forums.xkcd.com PR6
http://forums.techsmith.com PR6
http://www.testfreaks.com/forum PR6
http://www.foxitsoftware.com/bbs PR6
http://forum.undernet.org PR6
http://phpicalendar.net/forums PR6
http://foro.comunidadjoomla.org PR6
http://www.joomlaportal.de PR6
http://forums.caspio.com PR6
http://talk.baltimoresun.com PR6
http://www.openebook.org/forums PR6