Lose the Facebook App and Your Battery Life Will Improve

RUSH: You want to save 15% of your iPhone battery life? Dump the Facebook app and use the browser to Facebook. The Facebook app is one of the biggest battery hogs in all of iOS. You get rid of the Facebook app and just use your web browser to log on and play around on Facebook, and your battery life will improve by 15%.
http://www.cbsnews.com/news/facebook-app-is-killing-your-phones-battery-life/