I must be missing something.
I do not understand all of the uproar about the neighbors. PLEASE someone correct me if I am wrong. This is what I understand about being neighbors. If they are your neighbor when they water your farm or when you water their farm it goes from a limit of 5 to 10 per day. So what is the big deal. They have no extra access to you, you do not have to talk to them. Someone/anyone can post to your wall wither they are a neighbor or not. If you think that as long as you do not have any neighbors than no one can see you well you are wrong. In main menu-social-community a list comes up and even if you have 0 stars (watering neighbors rating) your child may pop up on that list and anyone can visit that farm. But again even if they visit you do not have to respond back. I would think that if you are letting a child play that maybe it would be better if there was something in the settings that you could turn off neighbors/wall. Also at this point you only need neighbors to expand (as far as I know). So they just don't get to expand if you as their parent set the rule "no neighbors". Not that big of a deal.