I agree about those not knowing about the gallery settings, may be it should of been set to private as the default.
So it's not only me that goes that little bit further;) - I may or may not of reported some interesting pics stored on several users that really should either be put on an adults only site or a dating site.
I did set 99% of my images to private, though recently I've been mass deleting them as they won't be needed anymore.
On topic. I see that the image has now been hidden/removed on the users gallery:).