Some people have wondered if all of these directories that do not require a recip link really add your link... Well, I have a blog that I have done NOTHING to build links for except submit to all the free, non recip, SEO freindly directories on the vilesilencer list. I did that a week or 2 ago. I now have 92 links and counting: http://search.msn.com/results.aspx?q=link:http://adams-hunting-blog.blogspot.com/&FORM=QBRE Adam
You won't get any real traffic from a directory, but directory submissions are always good for links, which in turn will help your PR. Just make sure the directories you submit to don't use redirects, as they won't help your PR. The Vilesilencer list is a very nice collection of directories as the guy who maintains that list doesn't list any sites that use redirects and such.
Its free and white hat and wont hurt your site if done slowly, so why not use them. That is my thoughts on them