Listening tonight to an interview with Plus designer Joseph Smarr on the IEEE Podcast it became clear to me that for at least some of Plus’s leadership the goal is not to win social networking outright, or to kill any competitors, but to disrupt the social networking economy with a big enough, good enough and popular enough service that the walled gardens (Facebook in particular) are forced to open up interoperability enough that their users can communicate with the significant enough number of people in their lives that use a different social network. Back in the bad old days, customers of one phone network couldn’t call customers of other phone networks, then people couldn’t email out-of-network. Today people can’t be social across networks, but few people mind because everyone they care about is on Facebook.