Paranoid Paul is a web site run by a guy called Paul who is, by his own admission, paranoid about privacy policies. His site automatically monitors the privacy policies of scores of sites, and will alert you whenever any updates are detected on the sites that you choose to receive notifications about.
The service is free, and is a great way to ensure that your privacy isn't being invaded without your knowledge.
Sign up at www.paranoidpaul.com and start protecting your online information. My thanks for this great find go to regular contributor Panzer.