1) The document discusses privacy and how it relates to controlling the sharing of personal attributes and identity information on the internet. 2) It argues that without privacy protections, there could be invasions of privacy, failures of business relationships, and failures of freedoms of speech, association, and thought. 3) The conclusion is that some form of privacy is necessary for commerce, social interaction, and civil discourse to exist online, and that it may be most feasible to implement privacy controls at the application layer of the internet architecture rather than lower layers.