Comment by kungtotte

Devices have all made great advances in improving battery life, both by advancing battery technology and by having on the fly adjustments of things like screen brightness.

Content providers however haven't really done much. Do you think app and web developers give much thought to battery life when they make their products? If they ever optimize it's for reasons such as responsiveness (which drives customers away if it's poor), and battery life is at best a sideeffect.