As many people, as many opinions they say. Some people are very concerned about privacy. Some are not so. You lose something, you lose something. Of course, it might be really uncomfortable to find your private parts all over the Internet (not the case here), but than try to not to do anything that you might regret afterwards. I think if I found someone else’s media with files, I would try to return it. But I wouldn’t go into great effort to do so. Just some trivia. If that fails, I might as well post all of the content to the web. This way the owner will have a better chance of finding it. :)