After reading the WWW last year, and knowing of playa pranks (I was a virgin), I figured it would probably be a prank. A few days before the "show", a friend and I took a ride out there just to see how big this club was... and when we got there, we knew there was no way they were playing live.
Nevertheless, we biked on over on the night in question, just to see the riot. It was hilarious! Some people were really pissed off, some disappointed, some didn't care and were still dancing, and others, like us, had come just to watch.
It was pretty damn entertaining.
Then, of course, the spawn of that rumour came - a playa joke that everyone had fun with the rest of the week - "Didn't you know? Daft Punk's playing at the rocketship launch!" :P I still can't believe anyone actually thought it would take off...