edward, carlo has made some good points on your system. but his commentary focuses on specifics, whereas i would suggest that you would be wiser, at this point in time, to concentrate on the _bigger_ picture instead, thinking about how your system will fit within the archive.org infrastructure. it's also the case that carlo has been promising for years to create his own distributed proofing community, an effort that is probably gaining increasing attention from him now, given d.p.-europe appears to be on the verge of collapsing. so another course of action, edward, would be to work with carlo to iron out some of the current wrinkles in your system. whatever the case, as i said, you'll find lots of obstacles ahead. but don't give up; they will fall, if you decide to power through. -bowerbird