The first thing I do, is go to DMOZ and look for other sites that have been accepted already that are very close to what my site is about. Let us say for example that you had an acne site, what I would do is type into DMOZ and see what sites they show.
In the image below, you will see a category for acne that one of the sites I found was in.


So the first thing you need to work out is what the best category for your site to go into is. DMOZ are super strict with this and if you submit to a wrong category, that can be enough to get your site denied and that at the end of that. When you are confident you are on the right category page, then all you need to do is click the link suggest URL and fill out the form.​

It is also not a bad idea to have a look at the kind of sites that have been accepted in your chosen category and see if there is anything that you can do to your site to help it's chances. One thing I have done in the past is remove all advertising and affiliate links until DMOZ has accepted it, and then later add these back in.​

Another important thing to realize when trying to work out how to get listed in DMOZ is that you can submit your sites again and again, as many times as you like when trying to get in. However you must keep in mind that when you submit your site it goes to the bottom of the pile for review.​

What this means is that if you have submitted your site one day, and then you submit it again a week later, then DMOZ will recognize your domain from the first submission and remove it from the queue and leave your latest one there at the back!​
So what I do is leave it for a month and then submit it again, and I keep doing this every month until I get in. Different reviewers get your site each time so eventually you might get in, and I need to stress might be because it is never certain, and like I said I have yet to get this blog in, but i am still trying and have a reminder in my outlook to keep submitting every month.​

I think directory submissions are worth doing, as long as it is not the kind of directories that guarantee a listing if you pay them, because I don't hink Google would care for that much, but other directories still have a good effect for SEO.​