Right, so Facebook has perpetual rights to content that you have ever posted - after you delete it, after you delete your account, after years, and years... after you are dead, even?
Facebook Privacy Change Sparks Federal Complaint: "The section in question explains how Facebook has an 'irrevocable, perpetual' license to use your 'name, likeness, and image' in essentially any way, including within promotions or external advertising.
That clause wasn't new. What had changed was that a sentence at the end of the paragraph was now mysteriously missing. The deleted line stated that the license would 'automatically expire' if you removed your content. With that line omitted, Facebook's license to use your content is simply 'perpetual' and 'irrevocable,' even decades after you delete your stuff."