Here is the list I have been using to build my backlinks up. It takes a couple of months since they get so many free submissions but it is a good list. Also the website offers if you want a program that will help you fill in some of the forms with a click. Its a good site. http://www.onewaytextlink.com/
Thanks for that directories are very useful but hard to get into them. I use blog commenting mostly i enjoy makin friend and PR aswel. I have recieved PR2 with in 2months
I don't know about you guys but I wouldn't opt for the free option. You have to place a backlink on your own site to their site. Currently the site is greybarred in the google toolbar. Maybe not the best link to put on your site. Correct me if I'm wrong