Maybe, but it would be better if the personal info is not stored outside the computers of the people who agreed to share it amongst eachother than, as far as I

Maybe, but it would be better if the personal info is not stored outside the computers of the people who agreed to share it amongst eachother than, as far as I understand with blockchain, having it stored everywhere (decentralized) and immutable (forever); while that has it's place to prevent censorship, it is seems not to fit social networks.