“A privacyscore is a way to assess the privacy risk of using a website. Privacy risk is the chance that data about you will be used or shared in ways that you probably don’t expect. Privacyscores cover two kinds of data:

• We estimate privacy risk to personal data (such as your name or email address) based on the published policies of the website.
• We estimate privacy risk to anonymous data (such as your interests and preferences) based on the privacy qualifications of the other companies who collect this kind of data across websites.
• You can see privacyscores of the sites as you visit by using the privacyscore add-on for Firefox and Chrome.”