Scoble on social software valuations: “Doing the technology is fairly straightforward. I’m sure that could be built for $100 million or less. Probably far less if they really are smart about how they go about it. But duplicate the community and brand (er, those eyeballs, as Ballmer calls them) is far far far more difficult. The fact that he insists on calling me a set of eyeballs tells me Ballmer doesn’t understand the trend here.”