LCD screens can get dirty easily, but they require extra care when cleaning them, otherwise you can do more harm than good. LCDs are easily damaged by a lot of things and factors. Your notebooks, Ipods, mobiles all have LCD screens. LCD screens do not need anti glare stuff no matter what your PC salesman tells you, so dont get cheated.
LCD monitors are also very delicate.
Cleaning an LCD screen
Never use alcohol, detergents or even mild soap for an LCD screen. All good LCD screens have outer protective coatings which can get damaged by abrasives, so always use a soft cloth (muslin), never use a scrubber. First switch of the LCD monitor and disconnect the power supply. Now wipe the screen with a cloth and gentle strokes, do not apply pressure or you may damage your screen. In case you see some dirt sticking, put 3 drops of water on the cloth and clean gently. Dont use too much water also.
Pressure on an LCD
Never press on LCDs too hard. Pressing too hard can permanently damage LCD pixels in that area.
Same image for so long, LCD Burnouts
LCD burnouts are another huge problem. Those who use CRTs are not aware that using LCDs can cause burnouts if the same image is displayed for a long time. Like my monitor has a weak imprint of the firefox browser, which basically stays there. That area also has become more prone to future burnouts. I was stupid. One should always use screensavers on LCD monitors, keep the waiting time as 2 minutes only so that screensaver is deployed quickly.
Extreme Temperatures
Never keep your LCD monitors directly in the sun, heat will damage your LCD monitor. Always keep the LCD monitor in a cool and well ventilated area. Also never use the LCD monitor in snow or sub-zero temperatures. It can cause permanent damage to the pixels.
Handle Carefully
Although it may not appear so, LCDs have glass too. Shocks to the screen can cause it to break and render your LCD useless. Sometimes cellphones in pockets get so much pressure that their screen just cracks and you have to get an expensive new screen.
Dont stick stuff to it
This might sound stupid, but NEVER stick post its to your LCD, the glue will damage your LCD monitor. I have seen people doing it.
Keep these things in mind and enjoy your new LCD monitor. Remember LCDs save money compared to CRT monitors and produce lesser heat helping you save on AC bills too.