I wrote this for my friends and family, to explain why the latest Facebook privacy policy is really harmful. Maybe it’ll help you too. External references — and steps to get off properly — at the bottom.
This was the most well-written version of what I’ve been telling people for a long time. Great summary that takes a bit longer to read than most of the content on the popular Internet but read it and share it with friends, especially those that use Facebook as their only social outlet online.