As said. Depending on site's quality the link could be a good Do-Follow one and that's one happy backlink!Links are still links and if it's a link from a good site, even if that site is a web directory, it is still counted as a good link which will contribute positively. There are many spammy auto-approved type of web directories out there. I recommend avoiding these, as they are just spam sites that are unregulated. A good one, not only has metrics, but the template must be different, and it must be unique from the rest - these should contribute positively to the site instead.