Privacy policies are long legalese documents that obfuscate meaning. Nobody reads them because they are indecipherable and obtuse. Yet, these are the documents that tell you what’s going on with your data — how, when, and by whom your information will used. To put it another way, the privacy policy lets you know if some company can make money from information (like selling you email to a spammer).
Creative Commons did an amazing thing for copyright law. It made it understandable.