How many hours does your battery last for? 3 hours? 5 hours? 8 hours? 12? Longer? Shorter? Do you use the web a lot? I figured I'd ask here because many of us use the web a lot on our phones so I wanted to get an accurate feel for how long I should expect the battery to last, since it can very with non-web oriented users who might say it last 8 hours, when in reality it lasts that long because they barely use it.