Looking around my smallish hometown area, I'm wondering if social workers and/or police make use of tools like this. I'm not advocating either way, but there's lots of young people essentially publicly confessing to crimes (pictures of them vandalizing, screenshots of text messages about planning to steal clothes from the mall, and plenty of teenage angst). I feel a bit creepy for looking at their pictures, but also shocked they're so revealing to the public. How clear does instagram make it that your photos are public? Is it ignorance or apathy on the part of the teens?