Just curious on everyones approach to cleanliness on the Air. Mine has significantly gathered alot of dust on the edges of the screen and dust in the black plastic hinge where the keyboard meets the monitor. Does anyone have any advice on how to wipe the dust off? I've been cleaning the screen with a Radtech wipe, but there has still been dust on the edges that the cloth is unable to pick-up. I feel kind of wary spraying an air canister can on it. And how do I approach the dust on the hinge? There seems to be a significant amount in there and I believe the fan is also located somewhere near there... (The area where evenly-spaced rectangles reside under the black plastic hinge, especially) Which makes me want to do something about it even more.