Not for burning in. As noted, however, it's better to turn it off to lenghten of the lifetime of the backlight.
Are screen savers needed to prevent damage (burning image or?) such as necessary for CRTs?? Thanks for your thoughts! ;D
Not the screen saver we used before but to power down the CCFL tubes and save their lifespan. These lamps dim in just a few years so you can extend this by using the power save feature and thus extend the screen's (the CCFLs) life.
CCFL life time is determined as the time at which brightness of lamp is 50%. But we'll start to complain at a time well before this 50% happens at 30 to 50 thousand hours.
http://www.wellypower.com.tw/english/qa_2.php?function_page=e has a nice graph showing this curve. And that's for long life bulbs. We are already hearing complaints about this as people compare their 2 year old laptop to a new one.
another device on the USB wireless that hooks up the mouse and keyboard. With a slight behavior difference in the programming, or maybe not. Maybe it'd act just like a mouse. Move the mouse? The monitor turns on. Sit in the chair? The monitor turns on. Of course, the installation would likely disable the screen saver and make it a power saver instead.
Light bulbs you shouldn't buy
There are plenty of dimmable LED light bulbs, but make sure you don't buy the ones that flicker when you dial them down.