Source: modDB
ForKmaN posts on modDB the proper way to submit a mod to the database:

Hi guys, I just wanted to have a litte chat to you. Since no one seems to read their PM's, here's the latest goss for you.

Basically, people obviously sign up here to chat about mods, or even add mods and so I want people to understand the 5 simple, easy to follow rules on adding a mod into the moddb:

1. Site – Does your mod have a publicly visible site containing basic details? More than a page saying ‘Coming Soon’ is needed.


2. Idea – Is your mod’s idea unique? If not, change it until it is! Blatant rip-offs will be ignored.
   
3. Leader – Do you really have the time and commitment to lead a mod team? Making a mod may seem like a 2 week job, but most have been going for at least a year.


4. First Steps – Have you done the first step of your mod? This could be as little as some concept art, but make sure something is done!5. Motive - Are you just doing this to be famous? If so then give up now. Try to make mods simply for the art and the challenge, not for personal reasons.

Now, number 1 is the main issue we have these days. I just went though 10 mods, and 8 didnt have a working website, so if you added a mod in the last 2 weeks and was wondering why It's hasn't been authed yet, well there is your reason.

BigBird and myself are the usual mod authers around here and we usualy like to give mods a chance by sending out a PM to the mods that haven't done simple things like a website, or lots of juicy info in the about section. We then give a week or so to fix it before we delete it.

From this day forward, thats not going to happen, if its not right first time, it gets deleted right away. PLEASE make sure you add the mod right first time!

If you have any questions, please do not hesitate to PM me.