Despite a strong initial start, in the universe of social media it's widely believed that Google+ will never replace Facebook.
That said, I'd like to get all Thomas Friedman-y and speculate wildly from a very limited personal anecdote. Namely, my 6th grader just begged to be allowed to join Google+. Begged! Stomping and huffing was involved when the request was denied. And why? "All my friends are on Google+!!!!"
I know for a fact that my kid's friends have parents who would certainly refuse to let them open an account on Facebook. My theory is that Google+ is such a "failure" as a social media hub that it's possible for parents to not even know that it's a social media hub. Or, if they do, the existence of "circles" as a way of limiting exposure gives parents a better sense of control, making Google+ seem like a more appropriate first ...
