I feel like my iPod 's battery life is shortening. Now, you know how you were always told not to charge your cell phone until it was close to dead? I sure hope this isn't the case for iPods because I've been doing that lately. I mean, c'mon, did Apple seriously think we were going to wait 'til our iPods were near-dead to add songs onto them? So, the final question comes down to this: is it better to wait until it completely dies, almost dies, or charge whenever possible?