I showed a three-year-old relative how to stream a Buster Keaton movie on her father's iPad. She was enthralled. It seems unwise to let a little kid use an iPad without supervision, and the screen is too small for others to watch with her. How about letting her watch such movies from the HD of a Mini? She wouldn't need to use a browser that way. From a user account, I suppose she couldn't damage the system or other accounts. At her age, maybe it would be best not to fool with Safari. Is there a way to make some apps unavailable to a certain user?