dvduval - 5:55 pm on Aug 4, 2010 (gmt 0)
You could pose the same question about having a blog, a forum, or a photo gallery. If you build quality, it will be worthwhile to your users to visit, and your website will prosper. There are lots of wonderful ways to integrate a directory right now. It could be directory jobs available in your niche (with this economy). It could be a directory of local businesses with reviews. There are lots of great ways to integrate a directory if quality is your goal.