Gmod? anyone

I'm a modder in most games,but not much in halo 3. Does anyone in this site familliar with gary's mod. It's a computer game that is a little bit like halo 3's forge, but better handling and more things you can use. I've already made some halo mods in gmod, but can someone tell me where to find a website to publish gmod mods because I really need to publish this new mod I made. This vid is 101 ways to kill gman. He is one of the characters you can do almost anything with in Gmod.

Haha