YouTube Copyright School

If you upload a video with copyrighted material, you could get a "strike" on your YouTube account. This includes making mashups and remixes of original content. In order to start posting again, you have to watch this video. After answering a few questions about it, you are once again allowed to post to YouTube. If you get 3 strikes, your account will be closed forever. I wonder if DJ Earworm will get his strikes now...