1. What sustainable business models will Facebook pursue that respect or even facilitate user privacy? 2. What will be simple to use mechanisms / technologies

1. What sustainable business models will Facebook pursue that respect or even facilitate user privacy? 2. What will be simple to use mechanisms / technologies / standards employed by FB to allow users to identify and delete their private information? 3. Will those privacy control mechanisms be standardized across Facebook products / technologies? 4. Will there be an effort to open source technologies / standards with respect to user privacy, so they can be peer reviewed and if good implemented by others in the industry? Thanks for your efforts!