Also, if you'd been to the Hyde Park gig this year, you'd know why people will take the risk - the checking of bags and pockets is none-existant! Fact is, when you're trying to get 100, 000 people into a stadium/arena/park, there simply isn't enough time or staff to check everyone's stuff. The only reason I had my bag searched is because I took a large backpack in (simply to carry food for my group of friends and jackets etc.). The security guard who checked it also seemed over-apologetic when nothing suuspicious was found - why?!?!? Its his job to check belongings. Its no wonder so much good quality photos and audios come from concerts when the security staff are obviously worried about getting it wrong. Not that I'm complaining, afterall, its us that ultimately benefits