Hi, I would like to extend the lifetime of my MacBook Air as far as I can. I am planning on keeping it for 3 to 5 years, maybe more. here is my normal routine in regards to maintenance Physical: 1. Remove my plastic Speck shell every 2 to 3 weeks and clean beneath it, rubbing down the aluminum casing with a slightly damp microfiber cloth. 2. Clean the keycaps and screen with a slightly damp microfiber cloth. 3. Place in front of fan over night (or used compressed air) to remove dust. I don't have any compressed air at the moment, so have been using a fan passively every few weeks. Compressed air has a tendency to compress into a freezing cold substance if you blow too hard, so I tend to avoid it sometimes (especially when I lose the little straw that comes with the bottle). 4. Wrap MagSafe adapter up, leaving a little breathing room at the top so the connector isn't stressed (I usually just leave a small loop). I usually fail at this, opting to leave my MS2 plugged into my surge protector at my desk. Hardware: 1. Ensure when I am doing intensive tasks, such as a Virtual Machine or video editing, that I am plugged in. 2. Watch Activity Monitor if my fan speeds up for an unapparent reason. 3. Don't use MBA on a bed or other fabric surface without the shell; it will trap air and make the MBA hotter. Software: 1. When excessive memory is being used, run MemoryClean. If you don't know this app, search it in the app store; it's mighty useful. 2. Run Disk Doctor to clean caches. 3. Empty trash. 4. Every week or so repair permissions. 5. Use Time Machine on a regular basis. Is there anything that anyone else does to ensure their MBA is pristine and in great working order? Am I being too OCD ( ); is there anything I could change? I want resell value to be as high as I can make it in a few years, as well as having a great laptop to use over that time. Thanks.