But aren't they also commoditizing the infrastructure for scalable social sites? You can read, or watch videos, of their entire approach to the design and archi

But aren't they also commoditizing the infrastructure for scalable social sites? You can read, or watch videos, of their entire approach to the design and architecture of their systems. They are essentially doing the R&D and sharing it with everyone. Also, they live on the fact that they make it easy for everyone to organize into social groups based on some kind of commonality. Well, what happens if that commonality is fighting against facebook charging for services? Or if people socialize into groups inviting people to move to another social site?