I listen to my ipod all the time. I think like everything else, it depends upon how you use it. I never have it loud (just a preference that has nothing to do with biking), and I tend to think of myself as a 'safe' rider.

It's not meant to be an insult, but I've seen a lot of people ride who are pretty aggressive, and that's just not how I roll.

Not to get into a debate by any means, but having gotten the door prize once, and hearing others on here getting hit by cars, in most cases it's not the cyclists fault. That said, having it so loud that you can't hear someone yelling at you, is just asking for trouble.