This is definitely worth preserving, and I can probably help because I'm one of the old GMers.  Here are my thoughts at 11:56 PM:

1) More links to third-party publications that talk about the software...

2) More details....

3) Some history. Compare GameMaker to other game creation systems before, contemporary with, and after it hit the market...

1) There was probably an article in MacAddict at some point.  Al surely knows and probably collected all of that.
2) I could probably do that.
3) GM was card-based and its most notable contemporary was HyperCard.  I thought of GM as a less-expensive alternative specifically oriented towards game-making, although I don't remember if it was actually pitched that way.  GM inspired SilverCreator.

Maybe we could beef it up by adding links to some games?

I can pick a few special games to use as examples on the wiki.  I think we should probably try to get the authors' permission before we use their content, though... most of them are potentially embarrassing, and conversely, a few of them are good enough to be claimed as copyrighted IP.
All the games can be downloaded here:
https://drive.google.com/folderview?id=0B_VpaY3i3BcnMGFXRUpqVDNETzg&usp=sharing

A release history would also make sense, if that's not too hard to find information on.

Here's a partial history.  Al would probably be happy to share the rest if he has it.
http://alstaffieri.com/gamemaker.html#History


Other thoughts:
The Wikipedia page mentions Steve Streza.  It could also mention Jason Steele, the animator who's famous for Charlie the Unicorn.  Jason's name on YouTube, "Secret Agent Bob," is a reference to a series of GM games that he made when he was a kid.

I've been checking in every 1-2 months.  I've been programming some things, trying to build a portfolio to help me get a programming job, but I'm not into game-making anymore.

That sounds really cool.  When I think about all the great times I've had with the GMG community over the years, it makes me sad to know that there's no record written down anywhere, and that my memories are fading.  A video documentary would be a great way to preserve our history.

oh, i noticed none of my games work that were made with sc1.5, so 10.9 sucks.

IIRC, SC 1.5 compiled PPC code, and OS X stopped supporting PPC after 10.6.  If you still have the source files, you can recompile your games as Intel code in SC 2.0b3.

Also, 10.9 requires applications to be signed by Apple.  To run non-signed programs, I think you need to go to System Preferences -> Security & Privacy and change the setting "Allow apps downloaded from:" to "Anywhere".

My OS is corrupting programs after running them! :U

That's... really weird.  I have a feeling that the programs themselves are OK, but the OS has some kind of configuration file for them that is messed up (though I don't know why that would happen).  You can get the MD5 checksum of a program before you run it, then get the checksum again afterward, and compare them to see if the program has changed.

That's a great deal, and a necessary upgrade.  You wouldn't want to run 10.9 on the old iMac... it might work, but it would be pretty slow.

Old posts won't be moved over?  But that's a big part of the history of who we are.  Will old posts be accessible some other way?

After having thought about this some more, I realize that this barcoding scheme was a bad idea.  It disobeys the rules of DB normalization, and it generally reflects my C-oriented brain trying to do SQL-oriented stuff.  I'm not ready to build a DB for a business yet.

I hope I can wrap my head around this stuff because I really want to be a DB admin someday.  The money is good, the job security is good, and in some ways it seems simpler than other types of programming.  The kind of stuff I've been focusing on for the past few years has always made me feel inadequate... I'll never know enough languages, or frameworks, or data structures, or whatever.  But DB administration?  Oddly, that seems feasible.  Maybe someday.

For me, it's a tie between David Berkowitz and Charles Manson.  I mean, I don't approve of their methods, or their personalities, or anything else about them... but, you know, they were pretty good maniacs.  Just sayin'.