Dofollow blog directories / search engines are now very useful in link building campaign. Here’s a master list of dofollow search engines, dofollow directories and resources.

http://www.squidoo.com/dofollow

– Very good listing of dofollow blog services, social networking sites, social bookmarking sites, article submission sites, social portal sites and wiki’s.

http://www.dofollow.us/

– A directory of 100’s of dofollow blogs organized in various categories.

http://linkbuildingbible.com/dofollowdiver/

– A dofollow blog search engine ( contains around 600+ blogs including 75+ with Top Commenter and 95+ with CommentLuv)

http://www.wp-blog.net/

– Another dofollow blog directory

http://www.digeratimarketing.co.uk/toolshop/DM_BlogsThatFollow.pdf

– Pdf document containing around 167 dofollow blogs in various categories along with their PR.

http://bloggers-directory.blogspot.com/2007/11/list-of-dofollow-blogs.html

– Nice list of dofollow blogs, though not organized.

http://courtneytuttle.com/blogs-that-follow/

– 200+ list of dofollow blogs in D-List

http://www.followlist.com/

– The Do-Follow Blog Directory

http://dofollow.thegermz.com/

– Dofollow Search Engine which allows searching from around 500 blogs.