Relationships can be established by finding any other user on the site and adding them as an acquaintance. Relationships are uni-directional; they do not need acknowledgment. When a relationship is established, a message will be sent to the person who is being added, giving them the option to become an acquaintance in return. Becoming an acquaintance can actually serve to provide additional access or further restrict access if you choose. For example, if a stalker adds you as an acquaintance, you have the option to add them back and then add them to an ackle group which the user can arbitrarily call 'assholes', and then add the rule 'assholes: deny' to any ackle.
When a relationship is added, it is treated like any other piece of information. The existence of the relationship will have its own ackle, permitting or denying others from seeing that the relationship exists.
For convenience purposes, ackles can receive arbitrary, user-determined names and thereby be re-used. If an ackle name is used for setting restrictions on any piece of information, updating the rules within that named ackle will automatically change restrictions on any piece of information that uses that named ackle. Because of this, modifying a named ackle will automatically prompt a user to determine whether they want to actually modify the ackle or to create a copy of the ackle and associate it with a new name.
At any time, a user can review all pieces of information that are affected by named ackles.
At any time, a user can view their own information as if they were any other user, in order to review and verify that the correct information and only the correct information is being presented.
I _think_ this is the end of my discussion on accounts and access. Again, I'm out of time, and will begin a new entry to discuss how entries are managed.