With Facebook's embracing of machine learning and their very deep dataset of personal information about users, this could be quite an amazing user experience an

With Facebook's embracing of machine learning and their very deep dataset of personal information about users, this could be quite an amazing user experience and quite a terrifying prospect for privacy. Facebook has a wealth of information on social relationship interactions and also on personal interests. Adding in information on romantic relationship interactions will allow them to (eventually, when the ML models are well-trained) provide amazing matches for users. The downside is that they'll now have a deep understanding of yet another aspect of your persona. What are the dangers? How can they monetize this new relationship knowledge? * Life insurance companies might want to know if someone is prone to date adrenaline junkies and be easily coerced into participating. * Insurance might want to know if someone "hooks up" frequently, which could indicate that the person is at risk of medical problems OR has issues with impulse control. * Dating profiles often match people by self-reported social activities like doing drugs, drinking, etc. That might be of interest to lots of companies. * Relationship going well? Expect to see a lot of ads related to co-habitation (joint checking accounts, moving services, etc) * If the dating service has a "feedback" component to allow people who go on dates to give information on aspects of the other persons personality, facebook might get information about a person that they don't even realize themselves and thus don't self-report. Such as the other person dresses badly, smells funny, needs dental work, tips well, etc. * If facebook determines that you tend to fall for a certain types of physical traits, ads featuring models with those traits will become a thing. * People don't give facebook every bit of information about themselves, but they do give it to dating services. Think of all those questionnaires that ask about your opinions on abortion, if you want to have kids, if dating someone with different political beliefs is a hard pass, etc. Dating services use it to match people up who might be compatible, but Facebook will use it help advertisers get even more granular controls over their targeted users. Even worse, if Facebook wants a certain political party to win, they could match up people who are firmly established in the political party they choose with people who are on the fence in order to let the dominant personality win.