WI/FI and video battery usage aside, I have wondered about applications draining battery life.
While notes probably does little to the battery, Google Maps is a powerful application. So, what I am wondering is how:
---Apple applications, including maps and even a paused piece of music, take away from battery life.
---3rd party apps take away from battery life, both...
---When you are using them, i.e. playing the NES simulator or using the to-do list
---When then are not being used but may not be shut off completely
---Does exiting out of an application stop its battery usage? Does holding down the home key until it force quits it? Does restarting your ipod and not opening the applications.
For most of this, I don't expect that any consumers have definitive answers. It would be nice if apple expanded on this information. They failed to do so far in presentations like the iphone (same deal, pretty much) workshop at Macworld but they might with the upcoming SDK.