You could almost view it as something close to a keylogger for one's own consciousness. I wouldn't trust them with my half collected thoughts, doesn't matter wh

You could almost view it as something close to a keylogger for one's own consciousness. I wouldn't trust them with my half collected thoughts, doesn't matter where their intentions lie with regards to selling said thoughts to advertisers. That's not even the worst thing that could happen with such a trove of data.