These is the IP address of the person, who viewed the image. Every time the image is sent to a person's browser, they get watermarked with this person's IP address. This is done so that even if the image is downloaded it's less likely to be be shared further. And if it would the person who did that would be easy to find.
Sure, each album has a setting section that you can access if you uploaded these images. You can find it if you click on the orange ribbon in the top of album page.
This is an image hosting platform to temporary and securely share your images. Most people would find it hard to downloading your images. And even if they do, they would have their IP address on them. You can still disable all the security features and use it as a simple image hosting, if you wish.
Assuming that you want to securely share an image (or several) with somebody:
Please send us a short message about this to email@example.com. We will immediately delete the album in question and ban the uploader(s) from using the site in future.
Please send us a short message about this to firstname.lastname@example.org. We would need some kind of proof that you are yourself. A photo of some ID card or a distinct photo of the person in question near the opened main page of Unsee.cc should be fine. Feel free to upload the photo to Unsee itself for better privacy, if you wish.
What you do need to know, though, is that in most of the cases the person who uploaded the images knows you well. It could be your friend, ex or even a family member.
The albums on Unsee are very short lived. Meaning that there's no way to stumble upon an album by chance.
Usually it goes down like this: