I'll tell you this: I created a video a while back which was an illustrated story. Took me almost a month to create. It got ganked by youtube and I almost got sued. Why? Because I had included a photo of a person whom I did not get permission from in the video. (Mainly because he was dead, but his money-grubbing relatives were not.) Like it or not, they were right, and I was wrong. Unless we are talking fair use, which is another kettle of fish, but whatever.