I was a DMOZ editor for many years, so let me tell you why it takes forever to get your link into the open directory.
Each category has a submission queue of sites that have been submitted to it. To approve a site, an editor must visit that category and approve your listing in the queue. Most categories have a large backlog of submissions and no editor that is actively looking at them. Likely your submission is lost in a queue.
Even if an editor does look at your submission they may choose to delete it because it is low quality, or skip it and leave it for some other editor. They also may move it to another more appropriate category where there is another queue.
To improve your chances of getting in:
- Choose a category with other sites like yours. If you choose the wrong category, your submission will just be moved and the process will take longer.
- Choose a small category with no sub-categories. These "leaf" categories are much likely to be judged as appropriate for your site. Very few sites get approved at higher level categories.
- Choose a category with an active editor. If the category says "editor needed" at the bottom, nobody is going to look at the queue. If there is an editor (or multiple editors) check how many categories they can edit by clicking on their profile. The fewer and smaller the better. With fewer small categories they are more likely to be keeping on top of the backlog.
- Use proper capitalization, spelling and grammar in your submission. The editor cannot publish a bad submission without editing it.
- Avoid marketing language. Don't use superlatives like "best." Don't use the phrase "and more." Don't use exclamation points.
- Use only your brand name as the title and describe your brand in the description.
It is a lot of work to get listed, and most categories no longer have any sites getting approved. Even if you do get listed, the upside of getting listed is very small. Years ago, the directory was more popular and getting listed could get you clicks. That really isn't true today. The directory would also get you a number of inbound links which would help with Google rankings. That effect is fairly low now too. It probably just isn't worth the effort anymore.