For those of you who follow the latest developments with cloud computing, I'd highly recommend following James Urquhart's blog The Wisdom of Clouds (good name, James. Much better than "SLA in the Data Center""!).
Not only does James provide useful links of interesting stuff, but really good insight and commentary. In particular, I like James' attempt to consolidate the definition of "cloud", "grid", "utility", "SaaS", etc. as in the recent post: It just keeps getting cloudier and cloudier.