So, facebook was paid for data on users' poor emotional state. And facebook experimented with adjusting news feeds to make people feel better or worse. https:/

So, facebook was paid for data on users' poor emotional state. And facebook experimented with adjusting news feeds to make people feel better or worse. https://duckduckgo.com/?q=facebook+news+feed+experiment&t=lm&ia=news https://duckduckgo.com/?q=facebook+news+feed+experiment&t=lm... I wonder how much it would cost to have facebook make people feel bad, and then serve them ads to which they would be more susceptible because of their low state.