Know some have recommended it's better to use web version and log out, rather than using app but up to individual. I do use Facebook but tend to post some things more sparingly in the public domain and have quite strict security settings. However worrrying that these can be overriden. Whilst suportive of more regulation think a danger if it goes too far.Think though you can expect some limits on privacy for the convenience in modern life and advertising models mean data becomes more important. Some think companies but should pay us for their data but would be challenge to bring that about.