- A user sets generic preferences, upon which her agent (browser) automatically acts. 
     She can now browse the Web seamlessly. 
   - She encounters a site with "exceptional" practices outside her generic
     preferences.
     Perhaps a sports news site wants to collect her favorite teams for a customized news
     page. 
   - The user is prompted if she wishes to consider other alternatives, consent to the
     exceptional practice, or to go elsewhere.
     She can develop a one-to-one relationship with a site she trusts.