There are many reasons why library users might want their privacy and confidentiality protected. Perhaps they have been diagnosed with a disease and want to learn more about it before they tell their children. They may be suffering from domestic or child abuse and want to find out how to get help. They may be researching their rights before deciding to blow the whistle on illegal activity at work. Or perhaps they're planning a special vacation as a surprise gift for a loved one. Privacy isn't about protecting people who are doing bad things. It's about giving our users the power to decide for themselves who will know about their reading and research interests. If a user chooses to share her reading list with others, that's fine; but we can't assume everyone wants that.