Heya Gomez, welcome to the forum.
The directory is working, but I do not think that it is working "properly"
That being said, you can still get listed up there, it is just a bit more difficult.
What makes it difficult to post, is that you need to find a listing in your area
in order to post a new topic. Lets take a look at the newest posted one by Jean Claude
http://www.autopia.org/forum/links/link/12-detailed-designs-auto-spa-atlanta-auto-detailing-paint-protection-film-clear-bra-installation-cquartz-finest-opti-coat-pro-and-modesta-coatings/
As you look at this listing, you see a black "Submit New Topic" link. If you hover over this, you can
see that it is for the Southeast region:
http://www.autopia.org/forum/links/category/7-southeast-usa/add
If you are in the southeast, then look no further, you can post here. Otherwise, you need to find your region
and post it there. Is there an easy way to do this? If there is, I don't know it.
This is where the directory loses functionality in my opinion. We need to be able to filter by region,
or be able to just post new listing by region. The way it sits currently, it works yet it is not streamlined.
I hope that this helps.