I approve of this thread.
p.s. Phuzion makes another very important point. Dust gathers up a lot more quickly than you'd think, and it's really fucking bad for your system. I personally blow out my entire case at least once a week, and a whole fuckload comes out every single time. Don't neglect your power supply, either. It gets really dusty up inside the fan, and it very often causes computer crashes and random reboots during high system load (read: gaming).
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