If you were to log in, you'd be able to get more information on your fellow community member.
I have a job as a "copyright assistant" at Washington State University. Even universities must obey the copyright laws and a BIG part of my job is to obtain permission from legal owners to use images and video from the WWW and other sources. Sometimes it is difficult to track down the true owner, as so many people have pirated things that I cannot find the original source. Good for you, prosecuting copyright violators is just the same as prosecuting shoplifters in a store. Just because it is on the Web does not mean it is "free for the taking." If everyone has this attitude, some great sites like this will cease to exist because the authors/inventors/artists will tire of the public stealing their work.