Don't forget, you can always buy an extended battery!
Or another one.
While I appreciate all the power-saving tips about making one's battery last longer, I like to use my phone to its fullest potential without restrictions. (Don't get me wrong, I'm not a power user or anything. But why the hell did I get a phone with all these bells and whistles if the first thing I've got to do is turn off 90% of the bells and whistles to preserve battery life?) Solution: Bought a backup battery. (The OEM battery/charger combo was perfectly priced to take advantage of that coupon Samsung gives you for registering the phone.)
But I would much rather take the opportunity to swap a battery out than to change all my settings to preserve precious juice.