Just a nitpick, but FB did that without any real user consent. This would require that companies not do it at all. Rather that the user himself would have to ta

Just a nitpick, but FB did that without any real user consent. This would require that companies not do it at all. Rather that the user himself would have to take his data to the new company and explicitly give the new company consent to host the data. That's the way it should work. The user should always be in charge of her data.