Of course they do, and they have for a while now. It's how they make money. In fact, they not only sell data they collect on your use of their service, they sell data based on information scraped by their persistent cookies as you browse other sites:
Selling targeted ads, targeting done by analysis of user data. According to FB: allowing user data to be leaked (which in turn allows for more directed individual targeting) was an oversight.
Of course they do, and they have for a while now. It's how they make money. In fact, they not only sell data they collect on your use of their service, they sell data based on information scraped by their persistent cookies as you browse other sites:
https://consumerist.com/2014/06/12/facebook-is-now-selling-y...