Let's say your child attends the party of a school friend at the local skating rink. You have met the parents and feel comfortable leaving your child in their care for a couple of hours.
Later that night your sibling calls and tells you they just saw the cutest pictures of your child on Facebook. She is FB friends with the birthday kid's mom. There is a group photo of all the kids eating cake at the table, a few shots of your child skating with the birthday boy, a picture of the birthday boy and your child posing with the gift that you bought and a close up of your child and the birthday boy making funny faces for the camera.
Your child isn't tagged in the photos, but the location of the party is tagged.
You have several mutual friends with this person, but you are not facebook friends with them.
Would this upset you?