Flash-Mob Subway Party

Thanks to Rocketboom for pointing me to the Subway Flash-Mob party.  As a technology cellphones are priming the culture for instantaneous plan adjustment.  A flash-mob is equally dependent on the technology as it is on the culture of the society.  Would a flash-mob work equally as well in a repressive culture as it would in an open one?  Not sure.  What I do know is that  this phenomenon has a whole host of activism potentials that have yet to be tapped.  Imagine instant protests that form as immediately as news can e broken.  Imagine do-it-yourself advocacy events that can be tailored and specialized on the fly.  But the technology itself is useless unless it in the hands of the knowledgeable.