Songs on your iTunes that you don't really like. Maybe you liked them once and then got sick of them. Or maybe you downloaded them for free off of iTunes Discovery Downloads, thinking that you could learn to enjoy them, but never did.
Me: Hey, could you burn me some of your Three Day's Grace songs?

Hannah: Yeah, sure. Hey do you want some MIKA too?

Me: Nah, I'd never listen too it. It would just be more iTunes pollution.
by LindseySubtlyInked May 30, 2008
Get the iTunes Pollution mug.