further info... from you tube faqs
the “as seen on” link is not any declaration of copyright. It is merely an indication that the video has been featured on a popular blog that has driven a lot of traffic to that video. This is a feature of the YouTube itself and is done automatically by the system.
You don’t need to remove the video, it’s not an indication that anything is wrong, in fact it is exactly the opposite...your video is popular.
Thanks for the clarification. I did not know that.