Obviously, as with the other functions of this forum, it has everything to do with your join date. Only the real GMC veterans make the cut.
December 2011, eh?
Let's just say you have a ways to go before you can take on the world. Keep working on that by, ummm, waiting I guess. Maybe some day you'll even be here longer than me.
These arbitrary statistics get you far in life. Think of it like a certificate of birth. You need that thing for a lot of stuff. So it must be pretty important to be able to prove that you've been existing for some period of time.
Good luck in all your endeavors, friend.
It's completely possible for someone who has been in the Game Maker community for years and years to have been a complete douche for years and years as well.
It's also possible for a relative newcomer to the GMC to be a professional, helpful, constructive, knowledgeable and contributing member.
All that said being considered for mod-ship in any respectable online community isn't just some arbitrary thing tied to willingness, the amount of time you've been trolling their forums or number of posts.
Unofficially, you can do that now. You can help the GMC by answering questions, reporting problems, and participating in discussions / Jams / etc. And you can help GameMaker development by reporting bugs.
Of course, the pay isn't too good. But the work is interesting. 
Bam! Right on the money.
Edited by needsfoodbadly, 07 March 2012 - 08:02 PM.