Bad idea.
I just saw a Myspace ad for the State Farm 'Show Your Stuff Giveaway!'. The add said 'Send in pictures of your stuff to be entered in the contest!'. They showed photos of a guitar and a snowglobe.
Somehow I don't think they thought this one through...are they really going to be surprised when they get a photo of someone's 'Junk'? I'll let you know.