Interesting article on password guessing via cloud computing

[David Shaw]

http://news.electricalchemy.net/2009/10/cracking-passwords-in-cloud.html

This is not, of course, an OpenPGP "crack", but rather high-speed  
password guessing.  The nice thing about cloud password guessing is it  
enables people to spin up massive cracking farms without actually  
having to manage the racks and racks of running hardware.

David