Flash-mob subway party

Community Mobilization point to Rocketboom for uncovering an account of a 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.