Jack DeJohnette on his FB had an open dialogue with the fans on this subject, and I have to say I'm with Keith and Jack on this one. Fans have such a sense of entitlement when they go to a concert, and the main attitudes the effect the LCD of culture at concerts has been involved in jazz a bit too much. When I go to a gig, I enjoy in the moment, I know it is not my right to encroach on the performers with my personal needs to have a personal "souvenir". Jack explained when you are in the moment with your eyes closed putting your best into the music and you see the flash how distracting it gets, and I appreciated that perspective from a musician I admire so much. Needless to say some fans clearly don't get it and feel the need to treat the gigs as social events rather than take in the music at that moment.