I understand what you're saying and not disagreeing. This potential future analogizes well to poor people donating blood and getting paid for medical testing. Statistically, it's typically college students who need the cash that do these things, but regular people also donate as well. The analogy to prostitution is also a good one. But there are two sides to prostitution. There is the negative, a poorly managed business model where the worker gets crappy treatment that is abusive, and then there is better business models, where prostitutes are offered some protection. I would say that Facebook's prostitution of our brainspace is akin to the second model. Example: This is a screenshot of my page as I saw it a few minutes ago. What's that on the side? That's an ad. What's that ad talking about? Now I'm absorbing it consciously because I make myself aware of ads - it's a hobby. But do most people? I don't think they do. I think they don't pay DIRECT attention, but indirectly they notice. Next time they go to the store, they might consider buying that product, or suddenly feel like bringing it up in a conversation. It's so commonplace, we don't even see it. Is it evil? I don't know, although a lot of money is put into industrial psychologists - and they're WAY AHEAD in the science compared to academics, because money is involved.