Funny
Funny, because in Finland, there's an extremely bad word ('vittu') which is the equivalent of 'fuck' in English, and where English-speakers might refer to "the F-word", Finnish speakers would refer to "the V-word". So for a moment I wondered what this article was about...
But back on topic. Surely if you outfitted those same virtualised servers with 'green' components (energy-saving PSUs and fans, low power consumption hard drives, mobile prosessors, and so forth) then the comparison of four servers at 20% capacity vs one server at 80% doesn't really pan out. If those four servers had green components from the start, it might be different, but a single, green, virtualised server surely must be better than the alternative.