do you also not email photos to anybody?
I just discovered that on Facebook if you right click the image you can copy and paste the image location elsewhere on the internet. This made me consider deleting photos off my own Facebook and MN profiles. However I then thought I email photos and send USBs of photos to people and the same could happen. But I'm not sure I want to stop doing this because it is an easy way for friends and family who don't live nearby to see pics of us.