_{Yeah, Facebook may use our data. They may sell the data to companies, governments. Now, some people may not really care about that. Well, if you want to be a private person, say, hypothetically speaking, however, then you can't if you are on Facebook. Actually, even if you are not on Facebook, and somebody uploads a photo of you to Facebook, then they have your photo. So, they collect the stuff. The problem is much deeper than what some people may know or may even want to know. It's a long story. I am still trying to come up with ways to introduce people to the 4th amendment which is all about privacy. I believe privacy is important. Here is an upvote. By the way, I have been choosing to be a public person. But some people may say they are private, but they put stuff on Facebook. A paradox haha.}