While in principle I think the approach is great, I have recently learned that some of your "volunteers" are in fact people infected with spyware. Can't find the corresponding article atm, though :-(
Yeah I met these guys when they presented at Rice a while back. I can tell you they aren't doing anything with Spyware. It was actually really frustrating because they had to keep answering this question over and over.
They're not infected with spyware. Some of the computing power comes from the users of freeware applications, who are asked _during install_ if they want to enable the grid system that powers us.