Perhaps most relevant to this issues is the social networking sites that are large data silos owned by private companies. There is much movement towards a more

Perhaps most relevant to this issues is the social networking sites that are large data silos owned by private companies. There is much movement towards a more open, decentralized, and federated social web. Indie Web Camp is an interesting group of people (which I proudly belong to) who care about and are building tools to this pursuit - http://indiewebcamp.com http://indiewebcamp.com