a website where you can create web pages that either have a still image or a looping gif, and a looping sound (mp3 or wav). The site itself isnt as great as newgrounds or anything, but its pretty good anyways. When a really cool or funny ytmnd page is created, sometimes it will start something known as a "fad". Some fads last as long as a year, or else they might only last a few days or weeks. The site has been running strong since 2001, and there are over 114,000 ytmnd pages already.
Fad 1: oh OH O Oh oh ohhh auauauaohhohh OHHH
Fad 2: NOOOOOOOOOOOOOOOOOOOOO!!!
Fad 3: What is love!? baby dont hurt me...
*YTMND is down for maintainence*