Looks like this thread tipped off some media coverage:
Gizmodo: So Long, YTMND
Mashable: YTMND, one of the internet's earliest meme sites, shuts down forever
Also, I greatly expanded the original post into a MetaFilter thread with more background, a bigger archive of saved pages, and instructions on how to search the Archive.org mirror of the site. The archived YTMND Wiki's list of fads is also useful if you need a guided tour down memory lane.
Gizmodo: So Long, YTMND
Mashable: YTMND, one of the internet's earliest meme sites, shuts down forever
Also, I greatly expanded the original post into a MetaFilter thread with more background, a bigger archive of saved pages, and instructions on how to search the Archive.org mirror of the site. The archived YTMND Wiki's list of fads is also useful if you need a guided tour down memory lane.