Slightly confusing infographic, but the end result is scary. As the author points out:

Let me be clear about something: I like Facebook. It’s helped me reconnect with dozens of people with whom I’d lost touch, and I admire the work their team does. I hope your takeaway from this infographic isn’t “I’m deleting my account”; rather, I hope it’s “I’m checking my privacy settings right now, and changing them to a level with which I’m comfortable.

My takeaway is “thank goodness I never bothered”.