I know the creators of at least a couple of these maps are "based" in this site. http://www.gotfrag.com/tf2/story/43896/?cpage=1
Oh noes, they forgot Nineaxis in the Furnace part of the article. D: Anyways, it's nice to see coverage of the custom mapping community. Even if the article is a bit short.
It makes me curious if dustribute (or any new-gameplay mechanic map) will be accepted by the competitive community