I saw this job advertisement on the Internet: http://mthruf.files.wordpress.com/2010/01/takeone.jpg?w=500&h=366 My first reaction was, this is pretty cool, but after seeing how easily solved the problem was, I think it's more of a marketing gimmick than anything else. Would you even bother to call?
Edit: sorry, don't know how to make a hyperlink out of submission text.