This is why patents are ridiculous;
On Tuesday, the USPTO granted Microsoft a patent for privacy policy change notification, which describes how to threaten users with the loss of their accounts and access to web sites and services should they refuse to consent to changes in a privacy policy. This includes the case where a user might object to allowing personal information, collected earlier with a promise of confidentiality, to be shared in the future with third parties. Also described is a 'Never Notify Me' option so you won't have to 'worry' over privacy policy changes.
Isn't the patent system supposed to protect innovative ideas?