I have heard before that it's not good to have the battery fully charged 24/7. With my 3rd generation iPod touch, I kept it plugged in 99% of it's lifetime (that I used it for) and the battery seems to still be good after 1 year. The battery was only drained about 10 times. So what should I do with the new 4th generation iPod touch? I have drained it's battery already to help calibrate it and now I was wondering if I should just keep it charged or if I should unplug it or take it with me more often to use the battery more? What do you recommend for longevity?