Part of what made him so popular on Google+ is that he was an early adopter, but more than that, the lesson to be learned from his experience is that you have to focus on something to get the maximum benefit from it. He was able to do that by abandoning Facebook, Twitter and even his own blog, rather than simply adding Google+ on top of everything (Ugh, another thing I have to check every day...).
Anyway, worth a read if you just don't get Google+.