[krazy]

I've seen similar units used in the printing industry. They are hooked up with a fan and one of those generators to blow ionized air on the feeder of a machine, which redices paper sticking together by dissipating static electricity.

I'm not sure what it would do to clean air, but this kind of solution would be interesting to experiment with. The main thing it would do is fill your case with ionized air, which might remove dust already IN the case by allowing it to unstick from everything, assuming your airflow was great enough to carry it away then. Possibly great for power supplies.