I heard this as well so when I got my android I didn't install one. But the battery life was horrible. Often, if I used the phone regularly during the day the b

I heard this as well so when I got my android I didn't install one. But the battery life was horrible. Often, if I used the phone regularly during the day the battery would be dead by 9-10pm. I installed a task killer and killed everything when it booted up and killed a couple times a day. After that I suddenly have ~1.5 days worth of battery available. I'm not sure which app was being such a hog (I suspect it's an app that was refusing to let the phone go into sleep mode) but the task killer was most definitely necessary.