Does it make sense to ban the old light bulb in a world where we are encouraged to store Terrabytes of pointless photographs forever on fire-hot Web-servers forever spinning in a Google server farm?

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But if you take into account the use of open source products like Xen and KVM in massive data centers, web server farms, and by web application providers like Google and Salesforce.com, the CPUs running open source virtualization likely dwarfs the commercial market.

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