https://veekaybee.github.io/facebook-is ... ting-this/
And while on the subject of data mining the bigger picture is that it could be being gathered by all these corporations, google being one of the the biggest and used/sold to create artificial intelligence. Imagine having robots that use all our thought processes (words, searches and images) like a brain but rather than use a brain to come to a decision it uses a bunch of computer algorithms from all our data mined over the years.
Dangerous stuff when a robot or drone makes a decision like firing a weapon based on someone else's or a bunch of someone else's thought process and words. Then again that's not much dissimilar from how armed services work today accept a human has emotions along with a concious mind and can decide to either disobey an order or change their mind according to the situation at hand because we have proper intelligence....or do we. Imagine if it was all robots aboard the nuclear submarine like in the film the Hunt for Red October. Would the ballistic missiles been fired in that situation.

Food for thought and we should take action now to boycott these companies and do whatever we can to protect ourselves, our privacy and information from being leaked along with protecting our families and the human races future.