You can check this thread as well, I found here in this section (link development) http://forums.digitalpoint.com/showthread.php?t=1989067. You can also search using Google, search with the term dofollow blog list, I think you would find some list as well. You can also search according to your keyword if you want to post on wordpress blog. Use this term "powered by Wordpress" + your keywrods + commentluv. Make sure using even commentluv no grantee that all would be dofollow some of them would be nofollow as well, so try using Firefox nofofollow plug-in for better result.