Facebook knows everything

Facebook is the world’s second biggest advertising company after Google. They sell for almost five billion USD in ads per month. These ads can be very precisely targeted, because Facebook knows so much about you. This is why the ads result in lots of sales, so Facebook can ask a high price. Therefore Facebook has been collecting as much personal data about you as possible. Not only your interests, but also where you have been and your relationships with other people. Facebook keeps record of all the messages and calls you had with others in Facebook messenger. And if you authorized it (and many people did this without realizing), they also get lots of other information from your phone. And they keep details on many of the websites that you have visited. Now it is the news how this has been used to influence people in their political opinions. More in future posts.