A few weeks back, Jeremiah Owyang wrote a piece "Revealing Google's Stealth Social Network Play." In it he detailed the tactical benefits of a combined of Google Reader, Wave, and Sidewiki in a back-door strategy aimed at social networking. And more to the point, to realizing the advertising opportunities around social networking.Google has been neither a leader nor a even a decent case study in social networking. It's home-grown social network, Orkut, is popular elsewhere but not here. Open Soc...