krimson said:
Though, be VERY careful with those ion generators, it fragged the image chip on my Nikon Coolpix when i left it on the shelf next to the Breeze. I wouldn't leave it anywhere near anything you dont want being hit by it's magnetic field.
Yep, that's why I'd keep an "ionic" air filter far from my computer; they basically impart a static charge on dust particles, then attract them to a charged metal plate.
Problem is, lots of static, particularly if you're in a dry climate. Put one of those things near your G5 and who knows what might happen.
For the same reason, you want to be careful vacuuming near your computer--vacuums have a great big magnetic field generating motor in them. The motorized brush head does, too, and it ends up even closer to your computer--I had my PRAM screwed up by vacuuming once, though thankfully no hard drive badness happened.
Personally, I use the cheapest possible method: Blow hard on the dust. Makes a mess, and doesn't get things "clean", but it's enough to get the chunks that might obstruct airflow out of there.