This is a great metaphor for the infamous chicken/egg problem. To have a dance party, you obviously need a lot of dancers. Typically, however, nobody wants to join a dance party unless its already packed full of people. Just like this party snowballed from one extremely devoted dancer(user), a site relying on UGC can do the same.

With that being said--hundreds of onlookers and the presence of mind-altering substances surely didn't hurt the situation.