The whole "profile" and "mobileconfig" nomenclature is confusing to most people, I'm a little surprised that Apple hasn't put more effort into this area.
Sorry if I came across as damning you with faint praise, you really have done a nice job of setting up the service for non-technically minded people who want to keep their kids safe online.
I can't find any reference to your privacy policy or terms of service. You appear to use a unique string to identify profiles, what are you doing with the data you collect?