So I recently purchased a used Macbook Pro and I am loving it so far, picked up a bluetooth keyboard and mouse as well as Mini DP to DVI adapter to connect to my ultrasharp. So I got it all set up now, and will be using my MBP as a desktop replacement most of the time when at home. However, until Mavericks is released, the multi monitor support in Mountain Lion isn't real great for my needs. Although I do like to have the MBP screen available when I need it on the fly, so I don't really want to run clamshell mode. My question is, I have been just dimming the MBP display all the way dark when I am not using it, and then bringing it back up to light quickly when I do need it (via the BT keyboard)...is this going to cause the LCD backlight to wear out quicker? Or have any other negative effects on the macbook? I know its kinda a dumb question, I just want to make sure I am not doing anything to decrease the life of my notebook (I get paranoid with my stuff) Thanks guys!