Flash Mobs

Flash mobs have outlived their usefulness, haven't they? Like my stroller-into-the-cab gag, these things are better in theory than in actual practice. I for one would force my own head to explode if I found out train service I was on was interrupted because of some hipster fucks doing shit like this. And it's really only a matter of time until someone dies because of these things, isn't it? I await the inevitable "the ambulance couldn't get to the old lady's house to save her cause the street was jammed with 5,000 kids clicking through Scooby-Doo viewfinders" story.