Contact Checkboxes:

1. Allow/disallow connections other than tor (bluetooth, wifi direct)
2. Allow/disallow connection trough friends of this friend ('A' can communicate with D trough C whom trust your friend B, A is not a friend with C) That will become something like trusted lookup service, you mentioned here #1730
3. Allow/disallow connection trough my friends
4. Trust/deep level - max distant friend, max level of friends of friends of friends you allow.