If you've been to a concert in the last decade, and you've looked around you, you've seen the sea of little lights.
People holding up their cellphones, taking pictures and filming the band.
But some bands have had enough! At their most recent show, the Yeah Yeah Yeahs posted the above sign... telling people to put their phones away during the show. And according to this article on Spin.com, most of the people in the audience did what they were told - and the response to the sign was "overwhelmingly" positive!
So what do you think? Should cellphones be banned at concerts? Do you like to film shows that you go to see, or do you think that taping performances takes away from the experience?
Share your opinions in the comments below!