Since Ubuntu 9.04 was released officially today, the following Article is interesting. But not to mention you can do similar with Solaris/OpenSolaris.
Some nice videos about Cloud Computing and how it could reduce global warning. This is the point of view from Akamai so not necessary mine. I do not think that they use a proper definition of Cloud Computing.
Also some videos are a little bit to much like a commercial. Anyhow some ideas and facts are nice to read.
Lew Tucker describes the Sun Cloud API:
McKinsey & Co. released a report which they claim to be ‘a "hype free" approach starting with the most basic question of what a "cloud" actually is.’:
Sun released a nice document describing what Cloud computing is and how you can use it. It’s called "A guide to get started with Cloud Computing".