I'm not a big fan of these things but; when I played the european championships a couple of weeks back there were quite a lot of vuvuzuelas in the crowd but they were only heard at the right moment, when the defence were on the field. Football fans are smarter than the soccer fans in africa, they know better than to disturb their own offence.

But every team has a defense out there when the other team doesn't. So each group of fans can blow their vuvu's when theirdefense is out there all game long. That is what I meant. 4 quarters of this deafening noise.
I am not worried about these horns catching on because the NFL,stadiums are not going to allow it.