PR 6:
http://www.seobook.com
http://www.b2bemailmarketing.com
http://www.womenonbusiness.com
http://www.business2community.com
http://www.businessopportunities.biz
http://www.contentmarketinginstitute.com/blog
http://www.socialmediaexaminer.com
http://www.adrants.com
http://www.upandrunning.bplans.com
http://www.moz.com/ugc
http://www.blog.hubspot.com
http://www.smallbiztrends.com
http://www.econsultancy.com/uk/blog
http://www.marketingprofs.com
http://www.iwillteachyoutoberich.com
http://www.raventools.com
PR 5:
http://www.lkrsocialmedia.com/category/blog
http://www.tweakyourbiz.com
http://www.12most.com
http://www.ejunkie.info
http://www.onlinebahvior.com
http://www.nevillehobson.com
http://www.adverblog.com
http://www.suitcaseentrepreneur.com
http://www.socialfresh.com
http://www.mpdailyfix.com
http://www.blog.kissmetrics.com
http://www.blog.marketo.com
http://www.convinceandconvert.com
http://www.killerstartups.com
http://www.scottmonty.com