Viz., what amount of productivity in the US economy has been sacrificed this week by people playing with G+ and trying it out? I will be the first to say that mine has been somewhat impaired … on the other hand, short term versus long term, I think in the long term it will contribute to productivity, or a decent chance that it will. I plan to post another day on comparisons between the two, but for now let me say only that in a lot of ways G+ and FB oddly complement each other.
PS. My former student Jason Schwartz comments on FB:
A social networking site’s value increases with its membership, so maybe the answer is “zero – we’ve just been working for Google this week.”