I really believe gpumax would take off if there was leased work for things like rendering, password cracking, scientific research, etc. it would also help people with large farms hedge if bitcoin ever had any issues.
I've long thought this is really where GPUMAX needs to go.. even made a post about it a couple months ago.. https://bitcointalksearch.org/topic/m.717568 there is demand out there for it (www.hoopoe-cloud.com, amazon ec2 GPU clusters, etc..) .. I also think there is already a secure method of implimenting a distributed GPU cloud -- I think it is http://boinc.berkeley.edu/
Currently Pirate gets ~10% margin on leased shares.. I'd wager that would be a pittance compared to what he could bring in re-leasing GPU time .. just for comparison.. a 7970 at current BTC prices and difficulty will bring in (very roughly) about 10 cents per hour. the on demand price for GPU's on an amazon ec2 cluster is 52 cents per hour per GPU ($2.10 per hour on a quadruple rig) ..
Heck, pirate could double his take to 20% margin, and we'd all still be maxing out the newegg credit lines trying to bring more power online.
Just my 2 cents..
Sigg