Yes, this has been in the pipeline for some time now?

http://www.engadget.com/2007/10/24/e...supercomputer/

And before that I recall some guys hooking together a number of games consoles.

Apparently the design and functionality of graphics and gaming processors make them far more efficient at dedicated tasks such as this.

To be honest I would have thought that any sensible organisation would not entrust commercially sensitive information to anything other than VPN. What their customers do is an entirely different matter