There was a time that directories were a powerful and useful resource in marketing a website or helping to get it ranked high in the search engines. However, I would have to question whether or not directories are worth the time in the modern Google age of enough changes to almost list an entire zoo worth of names including Penguin and Panda. There are other methods that would be much more useful investments of your time and energy for ranking a website and for driving traffic to a website, as well. Take the time to build social pages or creating guest posts on other websites. These would be more useful activities than posting your links in directories.