How do I disable private browsing in Safari One of my friends has a child who is being overly sneaky online (imagine that). She wants to disable the ability for her child to select "Private Browsing" in Safari. In her opinion, Parental Controls are too limiting for a teenager, but Private Browsing is too permissive. Is there a terminal command or other way to do this on OS X?

(Of note: I did see the trick of using Interface Builder to edit the NIB file to delete the option from the Safari Menu, but I think it would be beyond her tech ability to perform those steps. I also doubt she'd want to install Xcode).

Thanks for you help!
I could suggest something more evil : 

Enable parental controls and use the logs ! 

Someone on Apple Support asked if private browsing disabled logging. It appears no, the parents controls will still log the websites. Even if the sneaky kids enable the private browsing, the logs will spill the beans !