I live right next to a major road... There's so much dust in the air that for 6 months I thought I had black screen doors - until I decided to clean them one day and realized they were originally white!!! :Q
Well, anyway, I dreaded the thought of letting all that dust freely circulate through my beloved machine so I bought some air filter material and covered up all the holes on the machine from inside. I still get some dust in of course, but it helps a lot. This way I only have to clean the filters, not the insides of the computer.
As for keyboard-cleaning... When I first bought my machine I could not find an MS Natural Keyboard anywhere and I did not want to waste money on some cheap model, so I waited till I could get my hands on the MS, and in the meantime I used a keyboard I took home from the lab. Man, that thing was so dirty I had to take off all the keys and give each of them a good scrub. Took me ages. Never want to do it again.
I once vacuumed my TV!!!
