Some directories also give you an option of adding a free link with no follow, but the best thing is to install mozilla do follow plug in, it will help you in determining which directories are no-follow and which are follow.
Normally all the directory are do follow, if some directory is no follow as the option is given in pricing section, u can also read this article http://www.web-freak.com/how-to-chec...-follow-links/ i hope it's help to check do follow or nofollow links.
Right click anywhere in your browser and select View Page Source. Then press Ctrl + F and search for ‘nofollow’ . If you can not find nofollow tag, it means that the directory is dofollow.
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The search status firefox add-on is really one of the best tool out there that you can use. I definitely recommend that tool. I've been using it for years.