"There are many reasons to worry about cloud computing. Data stored in the cloud can be difficult to extract for you, yet all too easy to demand by government. Applications running the cloud can mean new gatekeepers between you and code you might want to run. (And in discussing these issues, people don't even agree on what the cloud means). Yet among Prof. Zittrain's concerns on cloud computing is rarely the fundamental worry that a vendor will simply lose the data - one assumes that a major vendor can get that part right. Then this:"