As far as a cloth... I found an old tee-shirt works VERY well... I wouldn't use a diaper... a bit too thick... can't get into the corners and along the sides of the screen...
DO NOT USE CAN OF AIR OR ANYTHING WITH PROPELLANTS... Most contain a petrolium and it will slowly ruin the case, and possibly the screen...
Anyone notice the need to re-calibrate the pointer every so often? Just a question...
Ark Man II