stinky - 9:45 pm on May 1, 2009 (gmt 0)

I am looking to create a contest for a website were individual will have to create a Video on YouTube showing how they use a certain product (from website) in a creative way.
My question is if people are posting these videos on YouTube how do i go about getting my website name in there videos?
Is there someway to get these people to put a short intro clip ( website name contest) of my website before there Youtube videos start?
These videos will be listed in my youtube channel and on my website.

Any advice or help in this is appreciated.