I wonder, how much my personal information is actually worth? The stuff you have at least? And if I were to approve it for the sale, what would be my cut of that value be? As surely I deserve it?
User data is worth much, much more than the the value users extract from "free" services. Especially considering this data is sold continually and perpetually. It doesn't just get purged from the market when the user stops using the service, and it's even bought and sold if the user never signed up for the service (shadow profiles).
We should definitely receive a fraction of these profits, or at the very least have control over the price and terms of sale.
