I just bought a 20 Apple Cinema Display and the beauty of cannot be conveyed in words. It is like looking at the face of God. Anyways, I freaked out when I first considered cleaning it, used some isopropanol-based glasses-cleaner, checked this site and freaked out again. But then I thought about it, everytime I get a new screen I'm scared to even touch it but a year or two later, I'm scrubbing it with paper towels and windex... or worse. And truly, my 5-year old 15 Sony CRT (antiglare-coated) screen is flawless, though I've long moved away from treating it with kid gloves. So, somehow, I wonder if it all really matters... Or is there something so fundamentally different between the antiglare coating on LCD's and CRT's that it's destroyed faster? or the coating on my glasses for that matter, which too is fine after 5 years of abuse).
From HP Website: Clean the Display LCD screens accumulate smudges and scratches all the time. To clean these, choose a non-abrasive cloth or towel. Plastic and glass cleaners containing ammonia may leave a glare-causing film, so use a computer monitor specific cleaner from a computer store. Spray the cleaner onto the cloth, then wipe the screen with it.
My Apple Display Manual has this to say about cleaning LCD screens with alcohol: Warning: Don't clean the screen with a cleaner containing alcohol or acetone. Use a cleaner intended for use with an LCD (liquid crystal display). Never spray cleaner directly on the screen. It may drip inside the display and cause electric shock. I'd be careful using alcohol. It could interact with the coating on the screen and lead to its disintegration.
Disconnect the display from power, from its connection to a computer, and from any external devices. Next use the cloth that came with your display or another soft, dry cloth to wipe dust from the screen. If additional cleaning of the display panel or case is required use a soft, slightly damp, lint-free cloth. Avoid getting moisture in openings. Donors"t use window cleaners, household cleaners, aerosol sprays, solvents, alcohol, ammonia, or abrasives to clean the display. Warning: Donors"t clean the screen with a cleaner containing alcohol or acetone. Use a cleaner intended for use with a screen or display. Never spray cleaner directly on the screen. It may drip inside the display and cause damage.