Why would it be surprising to see him on there? Dogfooding is a good idea, but in this case, there's nothing stopping someone from using both Facebook and Googl

Why would it be surprising to see him on there? Dogfooding is a good idea, but in this case, there's nothing stopping someone from using both Facebook and Google+. He'd be foolish to not be on Google+, how else is he supposed to know where he's winning and where he might lose users.