I'm making a website on super models. The problem is that I cannot locate the owners of many of my pictures. I'm planning on putting those pictures on anyways because these pictures are already available to the public on websites that are free to view. My website will be open to the public, I will not charge a membership fee. My website would only earn money from advertising.

My Questions:

Am I being stupid by ignoring copyright laws?

How big are the chances of me getting in trouble? (Many other websites are already doing the same thing I'm doing)

What is the worse thing that could happen to me if I get caught? (Fine, jail time, ect.)

If an owner sees their picture on my website and does not want them their, is it required that he notifys me before he goes to court?

Thank you for your time.