All of my mods are up there. I also see they don't always post them as the mod author, or get permission.
For example, I recently posted this thread about using TranslateTo to move a platform:
http://www.gamesas.com/topic/1383367-getting-collisions-to-move-with-translateto/page__hl__translateto
Their website gave me a new name and avatar and basically re-posted it word for word.
http://www.gamesas.com/getting-collisions-move-with-translateto-t260961.html
I believe these action constitute a violation of copyright under US law and I will be filing a formal take-down request. I encourage everyone else who's words are being misrepresented and who's modding work is being posted or stolen to do the same.