i remember reading somewhere that if you leave a LCD screen on for too long it will affect the brightness of the screen. also, under the screen saver control panel in OS X it says to use energy saver to prolong the length of your display. of course, LCD screens will fade/wear over time, but is there any real benefit to using energy saver? under normal use, (and what do Apple consider normal use for the TiBooks?) how long will a LCD display last before it needs replaceing? should i be worried about prolonging the life of my display?